You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@airflow.apache.org by po...@apache.org on 2020/05/19 12:18:00 UTC

[airflow] branch master updated: Release candidate 2 for backport packages 2020.05.20 (#8898)

This is an automated email from the ASF dual-hosted git repository.

potiuk pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/airflow.git


The following commit(s) were added to refs/heads/master by this push:
     new 375d1ca  Release candidate 2 for backport packages 2020.05.20 (#8898)
375d1ca is described below

commit 375d1ca229464617780623c61c6e8a1bf570c87f
Author: Jarek Potiuk <ja...@polidea.com>
AuthorDate: Tue May 19 14:17:22 2020 +0200

    Release candidate 2 for backport packages 2020.05.20 (#8898)
    
    Release candidate 2 for backport packages 2020.05.20
---
 BREEZE.rst                                         |  45 ++--
 .../amazon/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/amazon/README.md                 |   8 +
 .../cassandra/PROVIDERS_CHANGES_2020.05.20.md      |   1 +
 airflow/providers/apache/cassandra/README.md       |   8 +
 .../apache/druid/PROVIDERS_CHANGES_2020.05.20.md   |   1 +
 airflow/providers/apache/druid/README.md           |   8 +
 .../apache/hdfs/PROVIDERS_CHANGES_2020.05.20.md    |   1 +
 airflow/providers/apache/hdfs/README.md            |   8 +
 .../apache/hive/PROVIDERS_CHANGES_2020.05.20.md    |   1 +
 airflow/providers/apache/hive/README.md            |   8 +
 .../apache/livy/PROVIDERS_CHANGES_2020.05.20.md    |   1 +
 airflow/providers/apache/livy/README.md            |   8 +
 .../apache/pig/PROVIDERS_CHANGES_2020.05.20.md     |   1 +
 airflow/providers/apache/pig/README.md             |   8 +
 .../apache/pinot/PROVIDERS_CHANGES_2020.05.20.md   |   1 +
 airflow/providers/apache/pinot/README.md           |   8 +
 .../apache/spark/PROVIDERS_CHANGES_2020.05.20.md   |   1 +
 airflow/providers/apache/spark/README.md           |   8 +
 .../apache/sqoop/PROVIDERS_CHANGES_2020.05.20.md   |   1 +
 airflow/providers/apache/sqoop/README.md           |   8 +
 .../celery/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/celery/README.md                 |   8 +
 .../cloudant/PROVIDERS_CHANGES_2020.05.20.md       |   1 +
 airflow/providers/cloudant/README.md               |   8 +
 .../kubernetes/PROVIDERS_CHANGES_2020.05.20.md     |  24 --
 airflow/providers/cncf/kubernetes/README.md        | 139 ----------
 .../databricks/PROVIDERS_CHANGES_2020.05.20.md     |   1 +
 airflow/providers/databricks/README.md             |   8 +
 .../datadog/PROVIDERS_CHANGES_2020.05.20.md        |   1 +
 airflow/providers/datadog/README.md                |   8 +
 .../dingding/PROVIDERS_CHANGES_2020.05.20.md       |   1 +
 airflow/providers/dingding/README.md               |   8 +
 .../discord/PROVIDERS_CHANGES_2020.05.20.md        |   1 +
 airflow/providers/discord/README.md                |   8 +
 .../docker/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/docker/README.md                 |   8 +
 .../elasticsearch/PROVIDERS_CHANGES_2020.05.20.md  |   1 +
 airflow/providers/elasticsearch/README.md          |   8 +
 .../email/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/email/README.md                  |   8 +
 .../exasol/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/exasol/README.md                 |   8 +
 .../facebook/PROVIDERS_CHANGES_2020.05.20.md       |   1 +
 airflow/providers/facebook/README.md               |   8 +
 .../providers/ftp/PROVIDERS_CHANGES_2020.05.20.md  |   1 +
 airflow/providers/ftp/README.md                    |   8 +
 airflow/providers/google/ADDITIONAL_INFO.md        |  25 ++
 .../google/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/google/README.md                 |  15 ++
 .../providers/grpc/PROVIDERS_CHANGES_2020.05.20.md |   1 +
 airflow/providers/grpc/README.md                   |   8 +
 .../hashicorp/PROVIDERS_CHANGES_2020.05.20.md      |   1 +
 airflow/providers/hashicorp/README.md              |   8 +
 .../providers/http/PROVIDERS_CHANGES_2020.05.20.md |   1 +
 airflow/providers/http/README.md                   |   8 +
 .../providers/imap/PROVIDERS_CHANGES_2020.05.20.md |   1 +
 airflow/providers/imap/README.md                   |   8 +
 .../providers/jdbc/PROVIDERS_CHANGES_2020.05.20.md |   1 +
 airflow/providers/jdbc/README.md                   |   8 +
 .../jenkins/PROVIDERS_CHANGES_2020.05.20.md        |   1 +
 airflow/providers/jenkins/README.md                |   8 +
 .../providers/jira/PROVIDERS_CHANGES_2020.05.20.md |   1 +
 airflow/providers/jira/README.md                   |   8 +
 .../azure/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/microsoft/azure/README.md        |   8 +
 .../mssql/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/microsoft/mssql/README.md        |   8 +
 .../winrm/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/microsoft/winrm/README.md        |   8 +
 .../mongo/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/mongo/README.md                  |   8 +
 .../mysql/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/mysql/README.md                  |   8 +
 .../providers/odbc/PROVIDERS_CHANGES_2020.05.20.md |   1 +
 airflow/providers/odbc/README.md                   |   8 +
 .../openfaas/PROVIDERS_CHANGES_2020.05.20.md       |   1 +
 airflow/providers/openfaas/README.md               |   8 +
 .../opsgenie/PROVIDERS_CHANGES_2020.05.20.md       |   1 +
 airflow/providers/opsgenie/README.md               |   8 +
 .../oracle/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/oracle/README.md                 |   8 +
 .../pagerduty/PROVIDERS_CHANGES_2020.05.20.md      |   1 +
 airflow/providers/pagerduty/README.md              |   8 +
 .../papermill/PROVIDERS_CHANGES_2020.05.20.md      |   1 +
 airflow/providers/papermill/README.md              |   8 +
 .../postgres/PROVIDERS_CHANGES_2020.05.20.md       |   1 +
 airflow/providers/postgres/README.md               |   8 +
 .../presto/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/presto/README.md                 |   8 +
 .../qubole/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/qubole/README.md                 |   8 +
 .../redis/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/redis/README.md                  |   8 +
 .../salesforce/PROVIDERS_CHANGES_2020.05.20.md     |   1 +
 airflow/providers/salesforce/README.md             |   8 +
 .../samba/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/samba/README.md                  |   8 +
 .../segment/PROVIDERS_CHANGES_2020.05.20.md        |   1 +
 airflow/providers/segment/README.md                |   8 +
 .../providers/sftp/PROVIDERS_CHANGES_2020.05.20.md |   1 +
 airflow/providers/sftp/README.md                   |   8 +
 .../singularity/PROVIDERS_CHANGES_2020.05.20.md    |   1 +
 airflow/providers/singularity/README.md            |   8 +
 .../slack/PROVIDERS_CHANGES_2020.05.20.md          |   1 +
 airflow/providers/slack/README.md                  |   8 +
 .../snowflake/PROVIDERS_CHANGES_2020.05.20.md      |   1 +
 airflow/providers/snowflake/README.md              |   8 +
 .../sqlite/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/sqlite/README.md                 |   8 +
 .../providers/ssh/PROVIDERS_CHANGES_2020.05.20.md  |   1 +
 airflow/providers/ssh/README.md                    |   8 +
 .../vertica/PROVIDERS_CHANGES_2020.05.20.md        |   1 +
 airflow/providers/vertica/README.md                |   8 +
 .../yandex/PROVIDERS_CHANGES_2020.05.20.md         |   1 +
 airflow/providers/yandex/README.md                 |   8 +
 .../zendesk/PROVIDERS_CHANGES_2020.05.20.md        |   1 +
 airflow/providers/zendesk/README.md                |   8 +
 .../PROVIDERS_README_TEMPLATE.md.jinja2            |   7 +
 backport_packages/setup_backport_packages.py       |  75 +++++-
 breeze                                             |  74 ++++--
 breeze-complete                                    |   6 +-
 dev/BACKPORT_PACKAGES.md                           | 292 +++++++++++++++------
 dev/templates/vote_email.j2                        |   2 +-
 scripts/ci/_utils.sh                               |  16 +-
 .../ci/ci_prepare_and_test_backport_packages.sh    |   2 +-
 ...ort_readme.sh => ci_prepare_backport_readme.sh} |   2 +-
 scripts/ci/docker-compose/local.yml                |   2 +-
 .../in_container/run_prepare_backport_packages.sh  |  38 +--
 ...rt_readme.sh => run_prepare_backport_readme.sh} |   0
 scripts/ci/pre_commit_setup_cfg_file.sh            |   2 +-
 setup.cfg                                          |   3 +-
 132 files changed, 947 insertions(+), 327 deletions(-)

diff --git a/BREEZE.rst b/BREEZE.rst
index 36dd3ff..30d6ef5 100644
--- a/BREEZE.rst
+++ b/BREEZE.rst
@@ -655,7 +655,7 @@ This is the current syntax for  `./breeze <./breeze>`_:
     cleanup-image                            Cleans up the container image created
     exec                                     Execs into running breeze container in new terminal
     generate-requirements                    Generates pinned requirements for pip dependencies
-    generate-backport-readme                 Generates backport packages readme files
+    prepare-backport-readme                  Prepares backport packages readme files
     prepare-backport-packages                Prepares backport packages
     initialize-local-virtualenv              Initializes local virtualenv
     setup-autocomplete                       Sets up autocomplete for breeze
@@ -872,9 +872,9 @@ This is the current syntax for  `./breeze <./breeze>`_:
   ####################################################################################################
 
 
-  Detailed usage for command: generate-backport-readme
+  Detailed usage for command: prepare-backport-readme
 
-  breeze [FLAGS] generate-backport-readme -- <EXTRA_ARGS>
+  breeze [FLAGS] prepare-backport-readme -- <EXTRA_ARGS>
 
         Prepares README.md files for backport packages. You can provide (after --) optional version
         in the form of YYYY.MM.DD, optionally followed by the list of packages to generate readme for.
@@ -884,13 +884,13 @@ This is the current syntax for  `./breeze <./breeze>`_:
 
         Examples:
 
-        'breeze generate-backport-readme' or
-        'breeze generate-backport-readme -- 2020.05.10' or
-        'breeze generate-backport-readme -- 2020.05.10 https google amazon'
+        'breeze prepare-backport-readme' or
+        'breeze prepare-backport-readme -- 2020.05.10' or
+        'breeze prepare-backport-readme -- 2020.05.10 https google amazon'
 
         General form:
 
-        'breeze generate-backport-readme -- YYYY.MM.DD <PACKAGE_ID> ...'
+        'breeze prepare-backport-readme -- YYYY.MM.DD <PACKAGE_ID> ...'
 
         * YYYY.MM.DD - is the CALVER version of the package to prepare. Note that this date
           cannot be earlier than the already released version (the script will fail if it
@@ -917,19 +917,20 @@ This is the current syntax for  `./breeze <./breeze>`_:
 
         Builds backport packages. You can provide (after --) optional list of packages to prepare.
         If no packages are specified, readme for all packages are generated. You can specify optional
-        --version-suffix flag to generate rc candidates for the packages.
-
-        Make sure to set the right version in './backport_packages/setup_backport_packages.py'
+        --version-suffix-for-svn flag to generate rc candidate packages to upload to SVN or
+        --version-suffix-for-pypi flag to generate rc candidates for PyPI packages.
 
         Examples:
 
         'breeze prepare-backport-packages' or
         'breeze prepare-backport-packages -- google' or
-        'breeze prepare-backport-packages --version-suffix rc1 -- http google amazon'
+        'breeze prepare-backport-packages --version-suffix-for-svn rc1 -- http google amazon' or
+        'breeze prepare-backport-packages --version-suffix-for-pypi rc1 -- http google amazon'
 
         General form:
 
-        'breeze prepare-backport-packages -- <PACKAGE_ID> ...'
+        'breeze prepare-backport-packages \
+              [--version-suffix-for-svn|--version-suffix-for-pypi] -- <PACKAGE_ID> ...'
 
         * <PACKAGE_ID> is usually directory in the airflow/providers folder (for example
           'google'), but in several cases, it might be one level deeper separated with '.'
@@ -937,9 +938,13 @@ This is the current syntax for  `./breeze <./breeze>`_:
 
   Flags:
 
-  -S, --version-suffix
-          Adds optional suffix to the generated backport package version. It can be used to generate
-          rc1/rc2 ... versions of the packages.
+  -S, --version-suffix-for-pypi
+          Adds optional suffix to the version in the generated backport package. It can be used
+          to generate rc1/rc2 ... versions of the packages to be uploaded to PyPI.
+
+  -N, --version-suffix-for-svn
+          Adds optional suffix to the generated names of package. It can be used to generate
+          rc1/rc2 ... versions of the packages to be uploaded to SVN.
 
   -v, --verbose
           Show verbose information about executed commands (enabled by default for running test).
@@ -1423,9 +1428,13 @@ This is the current syntax for  `./breeze <./breeze>`_:
   ****************************************************************************************************
    Flags for generation of the backport packages
 
-  -S, --version-suffix
-          Adds optional suffix to the generated backport package version. It can be used to generate
-          rc1/rc2 ... versions of the packages.
+  -S, --version-suffix-for-pypi
+          Adds optional suffix to the version in the generated backport package. It can be used
+          to generate rc1/rc2 ... versions of the packages to be uploaded to PyPI.
+
+  -N, --version-suffix-for-svn
+          Adds optional suffix to the generated names of package. It can be used to generate
+          rc1/rc2 ... versions of the packages to be uploaded to SVN.
 
   ****************************************************************************************************
    Increase verbosity of the scripts
diff --git a/airflow/providers/amazon/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/amazon/PROVIDERS_CHANGES_2020.05.20.md
index 1556f29..d85b635 100644
--- a/airflow/providers/amazon/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/amazon/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [f4edd90a9](https://github.com/apache/airflow/commit/f4edd90a94b8f91bbefbbbfba367372399559596) | 2020-05-16  | Speed up TestAwsLambdaHook by not actually running a function (#8882)                                                                                              |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
diff --git a/airflow/providers/amazon/README.md b/airflow/providers/amazon/README.md
index e541ade..165055f 100644
--- a/airflow/providers/amazon/README.md
+++ b/airflow/providers/amazon/README.md
@@ -51,6 +51,13 @@ Release: 2020.5.20
 This is a backport providers package for `amazon` provider. All classes for this provider package
 are in `airflow.providers.amazon` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -249,6 +256,7 @@ All classes in Airflow 2.0 are in `airflow.providers.amazon` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [f4edd90a9](https://github.com/apache/airflow/commit/f4edd90a94b8f91bbefbbbfba367372399559596) | 2020-05-16  | Speed up TestAwsLambdaHook by not actually running a function (#8882)                                                                                              |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
diff --git a/airflow/providers/apache/cassandra/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/cassandra/PROVIDERS_CHANGES_2020.05.20.md
index 54252e3..b6e3a61 100644
--- a/airflow/providers/apache/cassandra/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/cassandra/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [7e6372a68](https://github.com/apache/airflow/commit/7e6372a681a2a543f4710b083219aeb53b074388) | 2020-03-23  | Add call to Super call in apache providers (#7820)                               |
diff --git a/airflow/providers/apache/cassandra/README.md b/airflow/providers/apache/cassandra/README.md
index 0fb0b8c..ea78886 100644
--- a/airflow/providers/apache/cassandra/README.md
+++ b/airflow/providers/apache/cassandra/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.cassandra` provider. All classes for this provider package
 are in `airflow.providers.apache.cassandra` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.cassandra` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [7e6372a68](https://github.com/apache/airflow/commit/7e6372a681a2a543f4710b083219aeb53b074388) | 2020-03-23  | Add call to Super call in apache providers (#7820)                               |
diff --git a/airflow/providers/apache/druid/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/druid/PROVIDERS_CHANGES_2020.05.20.md
index e264735..620bb61 100644
--- a/airflow/providers/apache/druid/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/druid/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                     |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                     |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                            |
diff --git a/airflow/providers/apache/druid/README.md b/airflow/providers/apache/druid/README.md
index 554ec2a..c5faf3d 100644
--- a/airflow/providers/apache/druid/README.md
+++ b/airflow/providers/apache/druid/README.md
@@ -42,6 +42,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.druid` provider. All classes for this provider package
 are in `airflow.providers.apache.druid` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -117,6 +124,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.druid` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                     |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                     |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                            |
diff --git a/airflow/providers/apache/hdfs/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/hdfs/PROVIDERS_CHANGES_2020.05.20.md
index 929ddb4..9ee72f3 100644
--- a/airflow/providers/apache/hdfs/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/hdfs/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                        |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                        |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                   |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)        |
 | [87969a350](https://github.com/apache/airflow/commit/87969a350ddd41e9e77776af6d780b31e363eaca) | 2020-04-09  | [AIRFLOW-6515] Change Log Levels from Info/Warn to Error (#8170)               |
diff --git a/airflow/providers/apache/hdfs/README.md b/airflow/providers/apache/hdfs/README.md
index db62c90..d5db433 100644
--- a/airflow/providers/apache/hdfs/README.md
+++ b/airflow/providers/apache/hdfs/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.hdfs` provider. All classes for this provider package
 are in `airflow.providers.apache.hdfs` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -101,6 +108,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.hdfs` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                        |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                        |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                   |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)        |
 | [87969a350](https://github.com/apache/airflow/commit/87969a350ddd41e9e77776af6d780b31e363eaca) | 2020-04-09  | [AIRFLOW-6515] Change Log Levels from Info/Warn to Error (#8170)               |
diff --git a/airflow/providers/apache/hive/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/hive/PROVIDERS_CHANGES_2020.05.20.md
index 854df98..e43ae53 100644
--- a/airflow/providers/apache/hive/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/hive/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [93ea05880](https://github.com/apache/airflow/commit/93ea05880283a56e3d42ab07db7453977a3de8ec) | 2020-04-21  | [AIRFLOW-7059] pass hive_conf to get_pandas_df in HiveServer2Hook (#8380)                                                                                          |
diff --git a/airflow/providers/apache/hive/README.md b/airflow/providers/apache/hive/README.md
index 88be921..5519d05 100644
--- a/airflow/providers/apache/hive/README.md
+++ b/airflow/providers/apache/hive/README.md
@@ -44,6 +44,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.hive` provider. All classes for this provider package
 are in `airflow.providers.apache.hive` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -144,6 +151,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.hive` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [93ea05880](https://github.com/apache/airflow/commit/93ea05880283a56e3d42ab07db7453977a3de8ec) | 2020-04-21  | [AIRFLOW-7059] pass hive_conf to get_pandas_df in HiveServer2Hook (#8380)                                                                                          |
diff --git a/airflow/providers/apache/livy/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/livy/PROVIDERS_CHANGES_2020.05.20.md
index 75432a1..119be73 100644
--- a/airflow/providers/apache/livy/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/livy/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [3320e432a](https://github.com/apache/airflow/commit/3320e432a129476dbc1c55be3b3faa3326a635bc) | 2020-02-24  | [AIRFLOW-6817] Lazy-load `airflow.DAG` to keep user-facing API untouched (#7517)                                                                                   |
diff --git a/airflow/providers/apache/livy/README.md b/airflow/providers/apache/livy/README.md
index 0111bc8..3ce6cd7 100644
--- a/airflow/providers/apache/livy/README.md
+++ b/airflow/providers/apache/livy/README.md
@@ -43,6 +43,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.livy` provider. All classes for this provider package
 are in `airflow.providers.apache.livy` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -120,6 +127,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.livy` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [3320e432a](https://github.com/apache/airflow/commit/3320e432a129476dbc1c55be3b3faa3326a635bc) | 2020-02-24  | [AIRFLOW-6817] Lazy-load `airflow.DAG` to keep user-facing API untouched (#7517)                                                                                   |
diff --git a/airflow/providers/apache/pig/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/pig/PROVIDERS_CHANGES_2020.05.20.md
index 7bb9a14..eab9026 100644
--- a/airflow/providers/apache/pig/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/pig/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-----------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                         |
diff --git a/airflow/providers/apache/pig/README.md b/airflow/providers/apache/pig/README.md
index f5fca54..584983d 100644
--- a/airflow/providers/apache/pig/README.md
+++ b/airflow/providers/apache/pig/README.md
@@ -40,6 +40,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.pig` provider. All classes for this provider package
 are in `airflow.providers.apache.pig` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -91,6 +98,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.pig` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-----------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                         |
diff --git a/airflow/providers/apache/pinot/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/pinot/PROVIDERS_CHANGES_2020.05.20.md
index 0fb6f45..91c5b89 100644
--- a/airflow/providers/apache/pinot/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/pinot/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                        |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                        |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                   |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)        |
 | [45c898330](https://github.com/apache/airflow/commit/45c8983306ab1c54abdacd8f870e790fad25cb37) | 2020-04-13  | Less aggressive eager upgrade of requirements (#8267)                          |
diff --git a/airflow/providers/apache/pinot/README.md b/airflow/providers/apache/pinot/README.md
index 3cdd580..dc9d492 100644
--- a/airflow/providers/apache/pinot/README.md
+++ b/airflow/providers/apache/pinot/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.pinot` provider. All classes for this provider package
 are in `airflow.providers.apache.pinot` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -85,6 +92,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.pinot` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                        |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                        |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                   |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)        |
 | [45c898330](https://github.com/apache/airflow/commit/45c8983306ab1c54abdacd8f870e790fad25cb37) | 2020-04-13  | Less aggressive eager upgrade of requirements (#8267)                          |
diff --git a/airflow/providers/apache/spark/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/spark/PROVIDERS_CHANGES_2020.05.20.md
index b6f2931..0f143cc 100644
--- a/airflow/providers/apache/spark/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/spark/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                          |
 | [7506c73f1](https://github.com/apache/airflow/commit/7506c73f1721151e9c50ef8bdb70d2136a16190b) | 2020-05-10  | Add default `conf` parameter to Spark JDBC Hook (#8787)                                          |
diff --git a/airflow/providers/apache/spark/README.md b/airflow/providers/apache/spark/README.md
index f8ceb5a..d33688d 100644
--- a/airflow/providers/apache/spark/README.md
+++ b/airflow/providers/apache/spark/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.spark` provider. All classes for this provider package
 are in `airflow.providers.apache.spark` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -102,6 +109,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.spark` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                          |
 | [7506c73f1](https://github.com/apache/airflow/commit/7506c73f1721151e9c50ef8bdb70d2136a16190b) | 2020-05-10  | Add default `conf` parameter to Spark JDBC Hook (#8787)                                          |
diff --git a/airflow/providers/apache/sqoop/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/apache/sqoop/PROVIDERS_CHANGES_2020.05.20.md
index cdfcf7f..c4808c9 100644
--- a/airflow/providers/apache/sqoop/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/apache/sqoop/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                        |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                        |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                   |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)        |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                               |
diff --git a/airflow/providers/apache/sqoop/README.md b/airflow/providers/apache/sqoop/README.md
index 6fcc63d..960e476 100644
--- a/airflow/providers/apache/sqoop/README.md
+++ b/airflow/providers/apache/sqoop/README.md
@@ -40,6 +40,13 @@ Release: 2020.5.20
 This is a backport providers package for `apache.sqoop` provider. All classes for this provider package
 are in `airflow.providers.apache.sqoop` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -91,6 +98,7 @@ All classes in Airflow 2.0 are in `airflow.providers.apache.sqoop` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                        |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                        |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                   |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)        |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                               |
diff --git a/airflow/providers/celery/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/celery/PROVIDERS_CHANGES_2020.05.20.md
index 973564e..c91a7ee 100644
--- a/airflow/providers/celery/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/celery/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [97a429f9d](https://github.com/apache/airflow/commit/97a429f9d0cf740c5698060ad55f11e93cb57b55) | 2020-02-02  | [AIRFLOW-6714] Remove magic comments about UTF-8 (#7338)                |
diff --git a/airflow/providers/celery/README.md b/airflow/providers/celery/README.md
index 0b338f0..b0c9ffc 100644
--- a/airflow/providers/celery/README.md
+++ b/airflow/providers/celery/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `celery` provider. All classes for this provider package
 are in `airflow.providers.celery` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -86,6 +93,7 @@ All classes in Airflow 2.0 are in `airflow.providers.celery` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [97a429f9d](https://github.com/apache/airflow/commit/97a429f9d0cf740c5698060ad55f11e93cb57b55) | 2020-02-02  | [AIRFLOW-6714] Remove magic comments about UTF-8 (#7338)                |
diff --git a/airflow/providers/cloudant/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/cloudant/PROVIDERS_CHANGES_2020.05.20.md
index a14401b..1953ce0 100644
--- a/airflow/providers/cloudant/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/cloudant/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:----------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                 |
 | [5648dfbc3](https://github.com/apache/airflow/commit/5648dfbc300337b10567ef4e07045ea29d33ec06) | 2020-03-23  | Add missing call to Super class in &#39;amazon&#39;, &#39;cloudant &amp; &#39;databricks&#39; providers (#7827) |
diff --git a/airflow/providers/cloudant/README.md b/airflow/providers/cloudant/README.md
index 3ebe0c9..0cb3295 100644
--- a/airflow/providers/cloudant/README.md
+++ b/airflow/providers/cloudant/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `cloudant` provider. All classes for this provider package
 are in `airflow.providers.cloudant` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -84,6 +91,7 @@ All classes in Airflow 2.0 are in `airflow.providers.cloudant` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:----------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                 |
 | [5648dfbc3](https://github.com/apache/airflow/commit/5648dfbc300337b10567ef4e07045ea29d33ec06) | 2020-03-23  | Add missing call to Super class in &#39;amazon&#39;, &#39;cloudant &amp; &#39;databricks&#39; providers (#7827) |
diff --git a/airflow/providers/cncf/kubernetes/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/cncf/kubernetes/PROVIDERS_CHANGES_2020.05.20.md
deleted file mode 100644
index fe57e63..0000000
--- a/airflow/providers/cncf/kubernetes/PROVIDERS_CHANGES_2020.05.20.md
+++ /dev/null
@@ -1,24 +0,0 @@
-
-
-### Release 2020.5.20
-
-| Commit                                                                                         | Committed   | Subject                                                                                  |
-|:-----------------------------------------------------------------------------------------------|:------------|:-----------------------------------------------------------------------------------------|
-| [8985df0bf](https://github.com/apache/airflow/commit/8985df0bfcb5f2b2cd69a21b9814021f9f8ce953) | 2020-05-16  | Monitor pods by labels instead of names (#6377)                                          |
-| [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                             |
-| [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                  |
-| [f82ad452b](https://github.com/apache/airflow/commit/f82ad452b0f4ebd1428bc9669641a632dc87bb8c) | 2020-05-15  | Fix KubernetesPodOperator pod name length validation (#8829)                             |
-| [1ccafc617](https://github.com/apache/airflow/commit/1ccafc617c4cb9622e3460ad7c190f3ee67c3b32) | 2020-04-02  | Add spark_kubernetes system test (#7875)                                                 |
-| [cd546b664](https://github.com/apache/airflow/commit/cd546b664fa35a2bf85acd77af578c909a327d92) | 2020-03-23  | Add missing call to Super class in &#39;cncf&#39; &amp; &#39;docker&#39; providers (#7825)                   |
-| [6c39a3bf9](https://github.com/apache/airflow/commit/6c39a3bf97414ba2438669894db65c36ccbeb61a) | 2020-03-10  | [AIRFLOW-6542] Add spark-on-k8s operator/hook/sensor (#7163)                             |
-| [42eef3821](https://github.com/apache/airflow/commit/42eef38217e709bc7a7f71bf0286e9e61293a43e) | 2020-03-07  | [AIRFLOW-6877] Add cross-provider dependencies as extras (#7506)                         |
-| [3320e432a](https://github.com/apache/airflow/commit/3320e432a129476dbc1c55be3b3faa3326a635bc) | 2020-02-24  | [AIRFLOW-6817] Lazy-load `airflow.DAG` to keep user-facing API untouched (#7517)         |
-| [0ec277412](https://github.com/apache/airflow/commit/0ec2774120d43fa667a371b384e6006e1d1c7821) | 2020-02-24  | [AIRFLOW-5629] Implement Kubernetes priorityClassName in KubernetesPodOperator (#7395)   |
-| [9cbd7de6d](https://github.com/apache/airflow/commit/9cbd7de6d115795aba8bfb8addb060bfdfbdf87b) | 2020-02-18  | [AIRFLOW-6792] Remove _operator/_hook/_sensor in providers package and add tests (#7412) |
-| [967930c0c](https://github.com/apache/airflow/commit/967930c0cb6e2293f2a49e5c9add5aa1917f3527) | 2020-02-11  | [AIRFLOW-5413] Allow K8S worker pod to be configured from JSON/YAML file (#6230)         |
-| [96f834389](https://github.com/apache/airflow/commit/96f834389e03884025534fabd862155061f53fd0) | 2020-02-03  | [AIRFLOW-6678] Pull event logs from Kubernetes (#7292)                                   |
-| [97a429f9d](https://github.com/apache/airflow/commit/97a429f9d0cf740c5698060ad55f11e93cb57b55) | 2020-02-02  | [AIRFLOW-6714] Remove magic comments about UTF-8 (#7338)                                 |
-| [cf141506a](https://github.com/apache/airflow/commit/cf141506a25dbba279b85500d781f7e056540721) | 2020-02-02  | [AIRFLOW-6708] Set unique logger names (#7330)                                           |
-| [373c6aa4a](https://github.com/apache/airflow/commit/373c6aa4a208284b5ff72987e4bd8f4e2ada1a1b) | 2020-01-30  | [AIRFLOW-6682] Move GCP classes to providers package (#7295)                             |
-| [83c037873](https://github.com/apache/airflow/commit/83c037873ff694eed67ba8b30f2d9c88b2c7c6f2) | 2020-01-30  | [AIRFLOW-6674] Move example_dags in accordance with AIP-21 (#7287)                       |
-| [059eda05f](https://github.com/apache/airflow/commit/059eda05f82fefce4410f44f761f945a27d83daf) | 2020-01-21  | [AIRFLOW-6610] Move software classes to providers package (#7231)                        |
diff --git a/airflow/providers/cncf/kubernetes/README.md b/airflow/providers/cncf/kubernetes/README.md
deleted file mode 100644
index 7d343ba..0000000
--- a/airflow/providers/cncf/kubernetes/README.md
+++ /dev/null
@@ -1,139 +0,0 @@
-<!--
- Licensed to the Apache Software Foundation (ASF) under one
- or more contributor license agreements.  See the NOTICE file
- distributed with this work for additional information
- regarding copyright ownership.  The ASF licenses this file
- to you under the Apache License, Version 2.0 (the
- "License"); you may not use this file except in compliance
- with the License.  You may obtain a copy of the License at
-
-   http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing,
- software distributed under the License is distributed on an
- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- KIND, either express or implied.  See the License for the
- specific language governing permissions and limitations
- under the License.
- -->
-
-
-# Package apache-airflow-backport-providers-cncf-kubernetes
-
-Release: 2020.5.20
-
-**Table of contents**
-
-- [Backport package](#backport-package)
-- [Installation](#installation)
-- [Compatibility](#compatibility)
-- [PIP requirements](#pip-requirements)
-- [Provider class summary](#provider-class-summary)
-    - [Operators](#operators)
-        - [New operators](#new-operators)
-        - [Moved operators](#moved-operators)
-    - [Sensors](#sensors)
-        - [New sensors](#new-sensors)
-    - [Hooks](#hooks)
-        - [New hooks](#new-hooks)
-- [Releases](#releases)
-    - [Release 2020.5.20](#release-2020520)
-
-## Backport package
-
-This is a backport providers package for `cncf.kubernetes` provider. All classes for this provider package
-are in `airflow.providers.cncf.kubernetes` python package.
-
-## Installation
-
-You can install this package on top of an existing airflow 1.10.* installation via
-`pip install apache-airflow-backport-providers-cncf-kubernetes`
-
-## Compatibility
-
-For full compatibility and test status of the backport packages check
-[Airflow Backport Package Compatibility](https://cwiki.apache.org/confluence/display/AIRFLOW/Backported+providers+packages+for+Airflow+1.10.*+series)
-
-## PIP requirements
-
-| PIP package   | Version required   |
-|:--------------|:-------------------|
-| cryptography  | &gt;=2.0.0            |
-| kubernetes    | &gt;=3.0.0            |
-
-# Provider class summary
-
-All classes in Airflow 2.0 are in `airflow.providers.cncf.kubernetes` package.
-
-
-## Operators
-
-
-### New operators
-
-| New Airflow 2.0 operators: `airflow.providers.cncf.kubernetes` package                                                                                              |
-|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| [operators.spark_kubernetes.SparkKubernetesOperator](https://github.com/apache/airflow/blob/master/airflow/providers/cncf/kubernetes/operators/spark_kubernetes.py) |
-
-
-
-### Moved operators
-
-| Airflow 2.0 operators: `airflow.providers.cncf.kubernetes` package                                                                                            | Airflow 1.10.* previous location (usually `airflow.contrib`)                                                                                                                |
-|:--------------------------------------------------------------------------------------------------------------------------------------------------------------|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| [operators.kubernetes_pod.KubernetesPodOperator](https://github.com/apache/airflow/blob/master/airflow/providers/cncf/kubernetes/operators/kubernetes_pod.py) | [contrib.operators.kubernetes_pod_operator.KubernetesPodOperator](https://github.com/apache/airflow/blob/v1-10-stable/airflow/contrib/operators/kubernetes_pod_operator.py) |
-
-
-
-
-## Sensors
-
-
-### New sensors
-
-| New Airflow 2.0 sensors: `airflow.providers.cncf.kubernetes` package                                                                                          |
-|:--------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| [sensors.spark_kubernetes.SparkKubernetesSensor](https://github.com/apache/airflow/blob/master/airflow/providers/cncf/kubernetes/sensors/spark_kubernetes.py) |
-
-
-
-
-## Hooks
-
-
-### New hooks
-
-| New Airflow 2.0 hooks: `airflow.providers.cncf.kubernetes` package                                                                     |
-|:---------------------------------------------------------------------------------------------------------------------------------------|
-| [hooks.kubernetes.KubernetesHook](https://github.com/apache/airflow/blob/master/airflow/providers/cncf/kubernetes/hooks/kubernetes.py) |
-
-
-
-
-
-
-
-## Releases
-
-### Release 2020.5.20
-
-| Commit                                                                                         | Committed   | Subject                                                                                  |
-|:-----------------------------------------------------------------------------------------------|:------------|:-----------------------------------------------------------------------------------------|
-| [8985df0bf](https://github.com/apache/airflow/commit/8985df0bfcb5f2b2cd69a21b9814021f9f8ce953) | 2020-05-16  | Monitor pods by labels instead of names (#6377)                                          |
-| [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                             |
-| [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                  |
-| [f82ad452b](https://github.com/apache/airflow/commit/f82ad452b0f4ebd1428bc9669641a632dc87bb8c) | 2020-05-15  | Fix KubernetesPodOperator pod name length validation (#8829)                             |
-| [1ccafc617](https://github.com/apache/airflow/commit/1ccafc617c4cb9622e3460ad7c190f3ee67c3b32) | 2020-04-02  | Add spark_kubernetes system test (#7875)                                                 |
-| [cd546b664](https://github.com/apache/airflow/commit/cd546b664fa35a2bf85acd77af578c909a327d92) | 2020-03-23  | Add missing call to Super class in &#39;cncf&#39; &amp; &#39;docker&#39; providers (#7825)                   |
-| [6c39a3bf9](https://github.com/apache/airflow/commit/6c39a3bf97414ba2438669894db65c36ccbeb61a) | 2020-03-10  | [AIRFLOW-6542] Add spark-on-k8s operator/hook/sensor (#7163)                             |
-| [42eef3821](https://github.com/apache/airflow/commit/42eef38217e709bc7a7f71bf0286e9e61293a43e) | 2020-03-07  | [AIRFLOW-6877] Add cross-provider dependencies as extras (#7506)                         |
-| [3320e432a](https://github.com/apache/airflow/commit/3320e432a129476dbc1c55be3b3faa3326a635bc) | 2020-02-24  | [AIRFLOW-6817] Lazy-load `airflow.DAG` to keep user-facing API untouched (#7517)         |
-| [0ec277412](https://github.com/apache/airflow/commit/0ec2774120d43fa667a371b384e6006e1d1c7821) | 2020-02-24  | [AIRFLOW-5629] Implement Kubernetes priorityClassName in KubernetesPodOperator (#7395)   |
-| [9cbd7de6d](https://github.com/apache/airflow/commit/9cbd7de6d115795aba8bfb8addb060bfdfbdf87b) | 2020-02-18  | [AIRFLOW-6792] Remove _operator/_hook/_sensor in providers package and add tests (#7412) |
-| [967930c0c](https://github.com/apache/airflow/commit/967930c0cb6e2293f2a49e5c9add5aa1917f3527) | 2020-02-11  | [AIRFLOW-5413] Allow K8S worker pod to be configured from JSON/YAML file (#6230)         |
-| [96f834389](https://github.com/apache/airflow/commit/96f834389e03884025534fabd862155061f53fd0) | 2020-02-03  | [AIRFLOW-6678] Pull event logs from Kubernetes (#7292)                                   |
-| [97a429f9d](https://github.com/apache/airflow/commit/97a429f9d0cf740c5698060ad55f11e93cb57b55) | 2020-02-02  | [AIRFLOW-6714] Remove magic comments about UTF-8 (#7338)                                 |
-| [cf141506a](https://github.com/apache/airflow/commit/cf141506a25dbba279b85500d781f7e056540721) | 2020-02-02  | [AIRFLOW-6708] Set unique logger names (#7330)                                           |
-| [373c6aa4a](https://github.com/apache/airflow/commit/373c6aa4a208284b5ff72987e4bd8f4e2ada1a1b) | 2020-01-30  | [AIRFLOW-6682] Move GCP classes to providers package (#7295)                             |
-| [83c037873](https://github.com/apache/airflow/commit/83c037873ff694eed67ba8b30f2d9c88b2c7c6f2) | 2020-01-30  | [AIRFLOW-6674] Move example_dags in accordance with AIP-21 (#7287)                       |
-| [059eda05f](https://github.com/apache/airflow/commit/059eda05f82fefce4410f44f761f945a27d83daf) | 2020-01-21  | [AIRFLOW-6610] Move software classes to providers package (#7231)                        |
diff --git a/airflow/providers/databricks/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/databricks/PROVIDERS_CHANGES_2020.05.20.md
index 433b1dc..d35f13b 100644
--- a/airflow/providers/databricks/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/databricks/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [649935e8c](https://github.com/apache/airflow/commit/649935e8ce906759fdd08884ab1e3db0a03f6953) | 2020-04-27  | [AIRFLOW-8472]: `PATCH` for Databricks hook `_do_api_call` (#8473)                                                                                                 |
diff --git a/airflow/providers/databricks/README.md b/airflow/providers/databricks/README.md
index 7f2666a..79c0e51 100644
--- a/airflow/providers/databricks/README.md
+++ b/airflow/providers/databricks/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `databricks` provider. All classes for this provider package
 are in `airflow.providers.databricks` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -99,6 +106,7 @@ All classes in Airflow 2.0 are in `airflow.providers.databricks` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [649935e8c](https://github.com/apache/airflow/commit/649935e8ce906759fdd08884ab1e3db0a03f6953) | 2020-04-27  | [AIRFLOW-8472]: `PATCH` for Databricks hook `_do_api_call` (#8473)                                                                                                 |
diff --git a/airflow/providers/datadog/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/datadog/PROVIDERS_CHANGES_2020.05.20.md
index 4366704..9e0ca3e 100644
--- a/airflow/providers/datadog/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/datadog/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/airflow/providers/datadog/README.md b/airflow/providers/datadog/README.md
index fc4f1d1..322f3f0 100644
--- a/airflow/providers/datadog/README.md
+++ b/airflow/providers/datadog/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `datadog` provider. All classes for this provider package
 are in `airflow.providers.datadog` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -97,6 +104,7 @@ All classes in Airflow 2.0 are in `airflow.providers.datadog` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/airflow/providers/dingding/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/dingding/PROVIDERS_CHANGES_2020.05.20.md
index ff31cdb..200d981 100644
--- a/airflow/providers/dingding/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/dingding/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/dingding/README.md b/airflow/providers/dingding/README.md
index 4b2f42d..42bc457 100644
--- a/airflow/providers/dingding/README.md
+++ b/airflow/providers/dingding/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `dingding` provider. All classes for this provider package
 are in `airflow.providers.dingding` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -107,6 +114,7 @@ All classes in Airflow 2.0 are in `airflow.providers.dingding` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/discord/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/discord/PROVIDERS_CHANGES_2020.05.20.md
index 9b3d0fb..ef43ef9 100644
--- a/airflow/providers/discord/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/discord/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [97a429f9d](https://github.com/apache/airflow/commit/97a429f9d0cf740c5698060ad55f11e93cb57b55) | 2020-02-02  | [AIRFLOW-6714] Remove magic comments about UTF-8 (#7338)                   |
diff --git a/airflow/providers/discord/README.md b/airflow/providers/discord/README.md
index 8021c75..5375510 100644
--- a/airflow/providers/discord/README.md
+++ b/airflow/providers/discord/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `discord` provider. All classes for this provider package
 are in `airflow.providers.discord` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -107,6 +114,7 @@ All classes in Airflow 2.0 are in `airflow.providers.discord` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [97a429f9d](https://github.com/apache/airflow/commit/97a429f9d0cf740c5698060ad55f11e93cb57b55) | 2020-02-02  | [AIRFLOW-6714] Remove magic comments about UTF-8 (#7338)                   |
diff --git a/airflow/providers/docker/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/docker/PROVIDERS_CHANGES_2020.05.20.md
index e7c7c28..1e24e68 100644
--- a/airflow/providers/docker/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/docker/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [511d98e30](https://github.com/apache/airflow/commit/511d98e30ded2bcce9d246b358f806cea45ebcb7) | 2020-05-01  | [AIRFLOW-4363] Fix JSON encoding error (#8287)                                                                                                                     |
diff --git a/airflow/providers/docker/README.md b/airflow/providers/docker/README.md
index b2aa877..1f5efc7 100644
--- a/airflow/providers/docker/README.md
+++ b/airflow/providers/docker/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `docker` provider. All classes for this provider package
 are in `airflow.providers.docker` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -99,6 +106,7 @@ All classes in Airflow 2.0 are in `airflow.providers.docker` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [511d98e30](https://github.com/apache/airflow/commit/511d98e30ded2bcce9d246b358f806cea45ebcb7) | 2020-05-01  | [AIRFLOW-4363] Fix JSON encoding error (#8287)                                                                                                                     |
diff --git a/airflow/providers/elasticsearch/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/elasticsearch/PROVIDERS_CHANGES_2020.05.20.md
index a50dc8b..4d731fa 100644
--- a/airflow/providers/elasticsearch/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/elasticsearch/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [65dd28eb7](https://github.com/apache/airflow/commit/65dd28eb77d996ec8306c67d5ce1ccee2c14cc9d) | 2020-02-18  | [AIRFLOW-1202] Create Elasticsearch Hook (#7358)                        |
diff --git a/airflow/providers/elasticsearch/README.md b/airflow/providers/elasticsearch/README.md
index 2d3f424..4cb7f7c 100644
--- a/airflow/providers/elasticsearch/README.md
+++ b/airflow/providers/elasticsearch/README.md
@@ -38,6 +38,13 @@ Release: 2020.5.20
 This is a backport providers package for `elasticsearch` provider. All classes for this provider package
 are in `airflow.providers.elasticsearch` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -77,6 +84,7 @@ All classes in Airflow 2.0 are in `airflow.providers.elasticsearch` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [65dd28eb7](https://github.com/apache/airflow/commit/65dd28eb77d996ec8306c67d5ce1ccee2c14cc9d) | 2020-02-18  | [AIRFLOW-1202] Create Elasticsearch Hook (#7358)                        |
diff --git a/airflow/providers/email/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/email/PROVIDERS_CHANGES_2020.05.20.md
index 180be64..186e1c8 100644
--- a/airflow/providers/email/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/email/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                           |
diff --git a/airflow/providers/email/README.md b/airflow/providers/email/README.md
index e8ea6e1..1114895 100644
--- a/airflow/providers/email/README.md
+++ b/airflow/providers/email/README.md
@@ -38,6 +38,13 @@ Release: 2020.5.20
 This is a backport providers package for `email` provider. All classes for this provider package
 are in `airflow.providers.email` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -78,6 +85,7 @@ All classes in Airflow 2.0 are in `airflow.providers.email` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                           |
diff --git a/airflow/providers/exasol/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/exasol/PROVIDERS_CHANGES_2020.05.20.md
index 28e90e7..cedee73 100644
--- a/airflow/providers/exasol/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/exasol/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [69dc91b4e](https://github.com/apache/airflow/commit/69dc91b4ef92d0f89abe097afd27bbe7ec2febd0) | 2020-04-02  | [AIRFLOW-6982] add native python exasol support (#7621)                 |
diff --git a/airflow/providers/exasol/README.md b/airflow/providers/exasol/README.md
index c9b92d8..793782b 100644
--- a/airflow/providers/exasol/README.md
+++ b/airflow/providers/exasol/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `exasol` provider. All classes for this provider package
 are in `airflow.providers.exasol` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.exasol` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [69dc91b4e](https://github.com/apache/airflow/commit/69dc91b4ef92d0f89abe097afd27bbe7ec2febd0) | 2020-04-02  | [AIRFLOW-6982] add native python exasol support (#7621)                 |
diff --git a/airflow/providers/facebook/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/facebook/PROVIDERS_CHANGES_2020.05.20.md
index 0d9f620..6c534c9 100644
--- a/airflow/providers/facebook/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/facebook/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [bc45fa675](https://github.com/apache/airflow/commit/bc45fa6759203b4c26b52e693dac97486a84204e) | 2020-05-03  | Add system test and docs for Facebook Ads operators (#8503)             |
diff --git a/airflow/providers/facebook/README.md b/airflow/providers/facebook/README.md
index c650465..87239f2 100644
--- a/airflow/providers/facebook/README.md
+++ b/airflow/providers/facebook/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `facebook` provider. All classes for this provider package
 are in `airflow.providers.facebook` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -84,6 +91,7 @@ All classes in Airflow 2.0 are in `airflow.providers.facebook` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [bc45fa675](https://github.com/apache/airflow/commit/bc45fa6759203b4c26b52e693dac97486a84204e) | 2020-05-03  | Add system test and docs for Facebook Ads operators (#8503)             |
diff --git a/airflow/providers/ftp/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/ftp/PROVIDERS_CHANGES_2020.05.20.md
index 37e0c53..a415594 100644
--- a/airflow/providers/ftp/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/ftp/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [87969a350](https://github.com/apache/airflow/commit/87969a350ddd41e9e77776af6d780b31e363eaca) | 2020-04-09  | [AIRFLOW-6515] Change Log Levels from Info/Warn to Error (#8170)           |
diff --git a/airflow/providers/ftp/README.md b/airflow/providers/ftp/README.md
index c6f389f..849a6b9 100644
--- a/airflow/providers/ftp/README.md
+++ b/airflow/providers/ftp/README.md
@@ -40,6 +40,13 @@ Release: 2020.5.20
 This is a backport providers package for `ftp` provider. All classes for this provider package
 are in `airflow.providers.ftp` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -92,6 +99,7 @@ All classes in Airflow 2.0 are in `airflow.providers.ftp` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [87969a350](https://github.com/apache/airflow/commit/87969a350ddd41e9e77776af6d780b31e363eaca) | 2020-04-09  | [AIRFLOW-6515] Change Log Levels from Info/Warn to Error (#8170)           |
diff --git a/airflow/providers/google/ADDITIONAL_INFO.md b/airflow/providers/google/ADDITIONAL_INFO.md
new file mode 100644
index 0000000..33e5d6b
--- /dev/null
+++ b/airflow/providers/google/ADDITIONAL_INFO.md
@@ -0,0 +1,25 @@
+<!--
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+ -->
+
+## Additional notes
+
+The BigQuery classes are undergoing heavy rewriting. The implementation in Airflow 2.0 will not
+be fully backwards compatible with the old BigQuery operators. Therefore, the BigQuery classes
+have been stripped out of the current release of the backport packages. We will add the
+BigQuery Classes back in one of the future releases of the provider's package.
diff --git a/airflow/providers/google/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/google/PROVIDERS_CHANGES_2020.05.20.md
index 00bed47..82aceb3 100644
--- a/airflow/providers/google/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/google/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [15273f0ea](https://github.com/apache/airflow/commit/15273f0ea05ec579c631ce26b5d620233ebdc4d2) | 2020-05-16  | Check for same task instead of Equality to detect Duplicate Tasks (#8828)                                                                                          |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
diff --git a/airflow/providers/google/README.md b/airflow/providers/google/README.md
index 9962140..9010d64 100644
--- a/airflow/providers/google/README.md
+++ b/airflow/providers/google/README.md
@@ -49,6 +49,20 @@ Release: 2020.5.20
 This is a backport providers package for `google` provider. All classes for this provider package
 are in `airflow.providers.google` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+## Additional notes
+
+The BigQuery classes are undergoing heavy rewriting. The implementation in Airflow 2.0 will not
+be fully backwards compatible with the old BigQuery operators. Therefore, the BigQuery classes
+have been stripped out of the current release of the backport packages. We will add the
+BigQuery Classes back in one of the future releases of the provider&#39;s package.
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -517,6 +531,7 @@ All classes in Airflow 2.0 are in `airflow.providers.google` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [15273f0ea](https://github.com/apache/airflow/commit/15273f0ea05ec579c631ce26b5d620233ebdc4d2) | 2020-05-16  | Check for same task instead of Equality to detect Duplicate Tasks (#8828)                                                                                          |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
diff --git a/airflow/providers/grpc/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/grpc/PROVIDERS_CHANGES_2020.05.20.md
index 8610827..a42506f 100644
--- a/airflow/providers/grpc/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/grpc/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                       |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                       |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                  |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)       |
 | [cb0bf4a14](https://github.com/apache/airflow/commit/cb0bf4a142656ee40b43a01660b6f6b08a9840fa) | 2020-03-30  | Remove sql like function in base_hook (#7901)                                 |
diff --git a/airflow/providers/grpc/README.md b/airflow/providers/grpc/README.md
index 085ad89..8d279eb 100644
--- a/airflow/providers/grpc/README.md
+++ b/airflow/providers/grpc/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `grpc` provider. All classes for this provider package
 are in `airflow.providers.grpc` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.grpc` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                       |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                       |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                  |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)       |
 | [cb0bf4a14](https://github.com/apache/airflow/commit/cb0bf4a142656ee40b43a01660b6f6b08a9840fa) | 2020-03-30  | Remove sql like function in base_hook (#7901)                                 |
diff --git a/airflow/providers/hashicorp/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/hashicorp/PROVIDERS_CHANGES_2020.05.20.md
index 5a080e8..6df2c79 100644
--- a/airflow/providers/hashicorp/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/hashicorp/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                   |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                   |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)              |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)   |
 | [d8cb0b5dd](https://github.com/apache/airflow/commit/d8cb0b5ddb02d194742e374d9ac90dd8231f6e80) | 2020-05-04  | Support k8s auth method in Vault Secrets provider (#8640)                 |
diff --git a/airflow/providers/hashicorp/README.md b/airflow/providers/hashicorp/README.md
index 709778c..169a10e 100644
--- a/airflow/providers/hashicorp/README.md
+++ b/airflow/providers/hashicorp/README.md
@@ -40,6 +40,13 @@ Release: 2020.5.20
 This is a backport providers package for `hashicorp` provider. All classes for this provider package
 are in `airflow.providers.hashicorp` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -100,6 +107,7 @@ All classes in Airflow 2.0 are in `airflow.providers.hashicorp` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                   |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                   |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)              |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)   |
 | [d8cb0b5dd](https://github.com/apache/airflow/commit/d8cb0b5ddb02d194742e374d9ac90dd8231f6e80) | 2020-05-04  | Support k8s auth method in Vault Secrets provider (#8640)                 |
diff --git a/airflow/providers/http/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/http/PROVIDERS_CHANGES_2020.05.20.md
index 827f16f..779b363 100644
--- a/airflow/providers/http/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/http/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [249e80b96](https://github.com/apache/airflow/commit/249e80b960ab3453763903493bbb77651be9073b) | 2020-04-30  | Add http system test (#8591)                                                                                                                                       |
diff --git a/airflow/providers/http/README.md b/airflow/providers/http/README.md
index a6e0a41..0a8fda4 100644
--- a/airflow/providers/http/README.md
+++ b/airflow/providers/http/README.md
@@ -42,6 +42,13 @@ Release: 2020.5.20
 This is a backport providers package for `http` provider. All classes for this provider package
 are in `airflow.providers.http` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -104,6 +111,7 @@ All classes in Airflow 2.0 are in `airflow.providers.http` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [249e80b96](https://github.com/apache/airflow/commit/249e80b960ab3453763903493bbb77651be9073b) | 2020-04-30  | Add http system test (#8591)                                                                                                                                       |
diff --git a/airflow/providers/imap/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/imap/PROVIDERS_CHANGES_2020.05.20.md
index fa6353d..237827d 100644
--- a/airflow/providers/imap/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/imap/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)                                                                                                     |
diff --git a/airflow/providers/imap/README.md b/airflow/providers/imap/README.md
index 40b9481..b25c519 100644
--- a/airflow/providers/imap/README.md
+++ b/airflow/providers/imap/README.md
@@ -40,6 +40,13 @@ Release: 2020.5.20
 This is a backport providers package for `imap` provider. All classes for this provider package
 are in `airflow.providers.imap` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -90,6 +97,7 @@ All classes in Airflow 2.0 are in `airflow.providers.imap` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)                                                                                                     |
diff --git a/airflow/providers/jdbc/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/jdbc/PROVIDERS_CHANGES_2020.05.20.md
index dc374b2..c4932f1 100644
--- a/airflow/providers/jdbc/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/jdbc/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                           |
diff --git a/airflow/providers/jdbc/README.md b/airflow/providers/jdbc/README.md
index 25cf90a..0a4517b 100644
--- a/airflow/providers/jdbc/README.md
+++ b/airflow/providers/jdbc/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `jdbc` provider. All classes for this provider package
 are in `airflow.providers.jdbc` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.jdbc` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                           |
diff --git a/airflow/providers/jenkins/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/jenkins/PROVIDERS_CHANGES_2020.05.20.md
index 73f2e2f..295cdff 100644
--- a/airflow/providers/jenkins/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/jenkins/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/jenkins/README.md b/airflow/providers/jenkins/README.md
index eb50057..fd30813 100644
--- a/airflow/providers/jenkins/README.md
+++ b/airflow/providers/jenkins/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `jenkins` provider. All classes for this provider package
 are in `airflow.providers.jenkins` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.jenkins` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/jira/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/jira/PROVIDERS_CHANGES_2020.05.20.md
index 2db7410..c8cb5f3 100644
--- a/airflow/providers/jira/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/jira/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)          |
diff --git a/airflow/providers/jira/README.md b/airflow/providers/jira/README.md
index 5c502fb..6532c7e 100644
--- a/airflow/providers/jira/README.md
+++ b/airflow/providers/jira/README.md
@@ -43,6 +43,13 @@ Release: 2020.5.20
 This is a backport providers package for `jira` provider. All classes for this provider package
 are in `airflow.providers.jira` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -112,6 +119,7 @@ All classes in Airflow 2.0 are in `airflow.providers.jira` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)          |
diff --git a/airflow/providers/microsoft/azure/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/microsoft/azure/PROVIDERS_CHANGES_2020.05.20.md
index 2e85d82..86e14ac 100644
--- a/airflow/providers/microsoft/azure/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/microsoft/azure/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [87969a350](https://github.com/apache/airflow/commit/87969a350ddd41e9e77776af6d780b31e363eaca) | 2020-04-09  | [AIRFLOW-6515] Change Log Levels from Info/Warn to Error (#8170)                                                                                                   |
diff --git a/airflow/providers/microsoft/azure/README.md b/airflow/providers/microsoft/azure/README.md
index db29e9e..d777861 100644
--- a/airflow/providers/microsoft/azure/README.md
+++ b/airflow/providers/microsoft/azure/README.md
@@ -47,6 +47,13 @@ Release: 2020.5.20
 This is a backport providers package for `microsoft.azure` provider. All classes for this provider package
 are in `airflow.providers.microsoft.azure` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -170,6 +177,7 @@ All classes in Airflow 2.0 are in `airflow.providers.microsoft.azure` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [87969a350](https://github.com/apache/airflow/commit/87969a350ddd41e9e77776af6d780b31e363eaca) | 2020-04-09  | [AIRFLOW-6515] Change Log Levels from Info/Warn to Error (#8170)                                                                                                   |
diff --git a/airflow/providers/microsoft/mssql/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/microsoft/mssql/PROVIDERS_CHANGES_2020.05.20.md
index f7cab5b..3a75197 100644
--- a/airflow/providers/microsoft/mssql/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/microsoft/mssql/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/microsoft/mssql/README.md b/airflow/providers/microsoft/mssql/README.md
index fcf9a95..cdcf4ee 100644
--- a/airflow/providers/microsoft/mssql/README.md
+++ b/airflow/providers/microsoft/mssql/README.md
@@ -42,6 +42,13 @@ Release: 2020.5.20
 This is a backport providers package for `microsoft.mssql` provider. All classes for this provider package
 are in `airflow.providers.microsoft.mssql` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -114,6 +121,7 @@ All classes in Airflow 2.0 are in `airflow.providers.microsoft.mssql` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/microsoft/winrm/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/microsoft/winrm/PROVIDERS_CHANGES_2020.05.20.md
index 9106a95..1fcd98c 100644
--- a/airflow/providers/microsoft/winrm/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/microsoft/winrm/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                 |
diff --git a/airflow/providers/microsoft/winrm/README.md b/airflow/providers/microsoft/winrm/README.md
index a7c4522..bf298ea 100644
--- a/airflow/providers/microsoft/winrm/README.md
+++ b/airflow/providers/microsoft/winrm/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `microsoft.winrm` provider. All classes for this provider package
 are in `airflow.providers.microsoft.winrm` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.microsoft.winrm` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                 |
diff --git a/airflow/providers/mongo/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/mongo/PROVIDERS_CHANGES_2020.05.20.md
index 5ac5261..c7b6f49 100644
--- a/airflow/providers/mongo/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/mongo/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)          |
diff --git a/airflow/providers/mongo/README.md b/airflow/providers/mongo/README.md
index b77fbfc..9e52a1e 100644
--- a/airflow/providers/mongo/README.md
+++ b/airflow/providers/mongo/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `mongo` provider. All classes for this provider package
 are in `airflow.providers.mongo` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.mongo` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)          |
diff --git a/airflow/providers/mysql/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/mysql/PROVIDERS_CHANGES_2020.05.20.md
index 7ceb631..139fff0 100644
--- a/airflow/providers/mysql/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/mysql/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                     |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                     |
 | [68d1714f2](https://github.com/apache/airflow/commit/68d1714f296989b7aad1a04b75dc033e76afb747) | 2020-04-04  | [AIRFLOW-6822] AWS hooks should cache boto3 client (#7541)                                  |
diff --git a/airflow/providers/mysql/README.md b/airflow/providers/mysql/README.md
index 1830fad..e948122 100644
--- a/airflow/providers/mysql/README.md
+++ b/airflow/providers/mysql/README.md
@@ -43,6 +43,13 @@ Release: 2020.5.20
 This is a backport providers package for `mysql` provider. All classes for this provider package
 are in `airflow.providers.mysql` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -126,6 +133,7 @@ All classes in Airflow 2.0 are in `airflow.providers.mysql` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                     |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                     |
 | [68d1714f2](https://github.com/apache/airflow/commit/68d1714f296989b7aad1a04b75dc033e76afb747) | 2020-04-04  | [AIRFLOW-6822] AWS hooks should cache boto3 client (#7541)                                  |
diff --git a/airflow/providers/odbc/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/odbc/PROVIDERS_CHANGES_2020.05.20.md
index 198fec8..e06ddae 100644
--- a/airflow/providers/odbc/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/odbc/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [2b06d0a3d](https://github.com/apache/airflow/commit/2b06d0a3deb4a4fcc64ee1948bb484e457096474) | 2020-01-21  | [AIRFLOW-6603] Remove unnecessary pylint warnings (#7224)               |
diff --git a/airflow/providers/odbc/README.md b/airflow/providers/odbc/README.md
index 93bab1c..e201ec0 100644
--- a/airflow/providers/odbc/README.md
+++ b/airflow/providers/odbc/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `odbc` provider. All classes for this provider package
 are in `airflow.providers.odbc` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -84,6 +91,7 @@ All classes in Airflow 2.0 are in `airflow.providers.odbc` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [2b06d0a3d](https://github.com/apache/airflow/commit/2b06d0a3deb4a4fcc64ee1948bb484e457096474) | 2020-01-21  | [AIRFLOW-6603] Remove unnecessary pylint warnings (#7224)               |
diff --git a/airflow/providers/openfaas/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/openfaas/PROVIDERS_CHANGES_2020.05.20.md
index ba2899e..f7a0dc9 100644
--- a/airflow/providers/openfaas/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/openfaas/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                        |
diff --git a/airflow/providers/openfaas/README.md b/airflow/providers/openfaas/README.md
index 0b2f164..cbf5c6b 100644
--- a/airflow/providers/openfaas/README.md
+++ b/airflow/providers/openfaas/README.md
@@ -38,6 +38,13 @@ Release: 2020.5.20
 This is a backport providers package for `openfaas` provider. All classes for this provider package
 are in `airflow.providers.openfaas` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -77,6 +84,7 @@ All classes in Airflow 2.0 are in `airflow.providers.openfaas` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                        |
diff --git a/airflow/providers/opsgenie/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/opsgenie/PROVIDERS_CHANGES_2020.05.20.md
index 3c1797a..6093e31 100644
--- a/airflow/providers/opsgenie/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/opsgenie/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/opsgenie/README.md b/airflow/providers/opsgenie/README.md
index 60b708d..79e5c6e 100644
--- a/airflow/providers/opsgenie/README.md
+++ b/airflow/providers/opsgenie/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `opsgenie` provider. All classes for this provider package
 are in `airflow.providers.opsgenie` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -107,6 +114,7 @@ All classes in Airflow 2.0 are in `airflow.providers.opsgenie` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                                                                                                   |
diff --git a/airflow/providers/oracle/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/oracle/PROVIDERS_CHANGES_2020.05.20.md
index 814d064..c0a1378 100644
--- a/airflow/providers/oracle/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/oracle/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                     |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                     |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                            |
diff --git a/airflow/providers/oracle/README.md b/airflow/providers/oracle/README.md
index a080779..97a06a4 100644
--- a/airflow/providers/oracle/README.md
+++ b/airflow/providers/oracle/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `oracle` provider. All classes for this provider package
 are in `airflow.providers.oracle` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -99,6 +106,7 @@ All classes in Airflow 2.0 are in `airflow.providers.oracle` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                     |
 |:-----------------------------------------------------------------------------------------------|:------------|:--------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                     |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                            |
diff --git a/airflow/providers/pagerduty/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/pagerduty/PROVIDERS_CHANGES_2020.05.20.md
index a8291ed..fa6205c 100644
--- a/airflow/providers/pagerduty/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/pagerduty/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)           |
diff --git a/airflow/providers/pagerduty/README.md b/airflow/providers/pagerduty/README.md
index 6fa5821..70d3609 100644
--- a/airflow/providers/pagerduty/README.md
+++ b/airflow/providers/pagerduty/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `pagerduty` provider. All classes for this provider package
 are in `airflow.providers.pagerduty` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -84,6 +91,7 @@ All classes in Airflow 2.0 are in `airflow.providers.pagerduty` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)           |
diff --git a/airflow/providers/papermill/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/papermill/PROVIDERS_CHANGES_2020.05.20.md
index 8d944a1..3bed83b 100644
--- a/airflow/providers/papermill/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/papermill/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                 |
diff --git a/airflow/providers/papermill/README.md b/airflow/providers/papermill/README.md
index bcc1d60..9ef8167 100644
--- a/airflow/providers/papermill/README.md
+++ b/airflow/providers/papermill/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `papermill` provider. All classes for this provider package
 are in `airflow.providers.papermill` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -86,6 +93,7 @@ All classes in Airflow 2.0 are in `airflow.providers.papermill` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                                 |
diff --git a/airflow/providers/postgres/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/postgres/PROVIDERS_CHANGES_2020.05.20.md
index bce362a..4a27cba 100644
--- a/airflow/providers/postgres/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/postgres/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-----------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                  |
 | [a28c66f23](https://github.com/apache/airflow/commit/a28c66f23d373cd0f8bfc765a515f21d4b66a0e9) | 2020-04-30  | [AIRFLOW-4734] Upsert functionality for PostgresHook.insert_rows() (#8625)               |
diff --git a/airflow/providers/postgres/README.md b/airflow/providers/postgres/README.md
index d059ea4..faca552 100644
--- a/airflow/providers/postgres/README.md
+++ b/airflow/providers/postgres/README.md
@@ -42,6 +42,13 @@ Release: 2020.5.20
 This is a backport providers package for `postgres` provider. All classes for this provider package
 are in `airflow.providers.postgres` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -114,6 +121,7 @@ All classes in Airflow 2.0 are in `airflow.providers.postgres` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-----------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                  |
 | [a28c66f23](https://github.com/apache/airflow/commit/a28c66f23d373cd0f8bfc765a515f21d4b66a0e9) | 2020-04-30  | [AIRFLOW-4734] Upsert functionality for PostgresHook.insert_rows() (#8625)               |
diff --git a/airflow/providers/presto/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/presto/PROVIDERS_CHANGES_2020.05.20.md
index e02469c..a680d50 100644
--- a/airflow/providers/presto/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/presto/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [1100cea1f](https://github.com/apache/airflow/commit/1100cea1fb9e010e6f4acc699c6d54d056c0541c) | 2020-05-03  | Remove _get_pretty_exception_message in PrestoHook                      |
diff --git a/airflow/providers/presto/README.md b/airflow/providers/presto/README.md
index a84cf1e..8de3c6b 100644
--- a/airflow/providers/presto/README.md
+++ b/airflow/providers/presto/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `presto` provider. All classes for this provider package
 are in `airflow.providers.presto` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -84,6 +91,7 @@ All classes in Airflow 2.0 are in `airflow.providers.presto` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [1100cea1f](https://github.com/apache/airflow/commit/1100cea1fb9e010e6f4acc699c6d54d056c0541c) | 2020-05-03  | Remove _get_pretty_exception_message in PrestoHook                      |
diff --git a/airflow/providers/qubole/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/qubole/PROVIDERS_CHANGES_2020.05.20.md
index 2f5c89b..a45d6c9 100644
--- a/airflow/providers/qubole/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/qubole/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4b06fde0f](https://github.com/apache/airflow/commit/4b06fde0f10ce178b3c336c5d901e3b089f2863d) | 2020-05-12  | Fix Flake8 errors (#8841)                                                                                                                                          |
diff --git a/airflow/providers/qubole/README.md b/airflow/providers/qubole/README.md
index 47c7969..e94a520 100644
--- a/airflow/providers/qubole/README.md
+++ b/airflow/providers/qubole/README.md
@@ -43,6 +43,13 @@ Release: 2020.5.20
 This is a backport providers package for `qubole` provider. All classes for this provider package
 are in `airflow.providers.qubole` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -116,6 +123,7 @@ All classes in Airflow 2.0 are in `airflow.providers.qubole` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [4b06fde0f](https://github.com/apache/airflow/commit/4b06fde0f10ce178b3c336c5d901e3b089f2863d) | 2020-05-12  | Fix Flake8 errors (#8841)                                                                                                                                          |
diff --git a/airflow/providers/redis/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/redis/PROVIDERS_CHANGES_2020.05.20.md
index af6372f..8cea0c1 100644
--- a/airflow/providers/redis/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/redis/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)          |
diff --git a/airflow/providers/redis/README.md b/airflow/providers/redis/README.md
index 00aff83..af04ca9 100644
--- a/airflow/providers/redis/README.md
+++ b/airflow/providers/redis/README.md
@@ -43,6 +43,13 @@ Release: 2020.5.20
 This is a backport providers package for `redis` provider. All classes for this provider package
 are in `airflow.providers.redis` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -112,6 +119,7 @@ All classes in Airflow 2.0 are in `airflow.providers.redis` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [05443c6dc](https://github.com/apache/airflow/commit/05443c6dc8100e791446bbcc0df04de6e34017bb) | 2020-03-23  | Add missing call to Super class in remaining providers (#7828)          |
diff --git a/airflow/providers/salesforce/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/salesforce/PROVIDERS_CHANGES_2020.05.20.md
index 983295d..7e2fb37 100644
--- a/airflow/providers/salesforce/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/salesforce/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [ff342fc23](https://github.com/apache/airflow/commit/ff342fc230982dc5d88acfd5e5eab75187256b58) | 2020-05-17  | Added SalesforceHook missing method to return only dataframe (#8565) (#8644)     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
diff --git a/airflow/providers/salesforce/README.md b/airflow/providers/salesforce/README.md
index c244961..f09980e 100644
--- a/airflow/providers/salesforce/README.md
+++ b/airflow/providers/salesforce/README.md
@@ -44,6 +44,13 @@ Release: 2020.5.20
 This is a backport providers package for `salesforce` provider. All classes for this provider package
 are in `airflow.providers.salesforce` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -118,6 +125,7 @@ All classes in Airflow 2.0 are in `airflow.providers.salesforce` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [ff342fc23](https://github.com/apache/airflow/commit/ff342fc230982dc5d88acfd5e5eab75187256b58) | 2020-05-17  | Added SalesforceHook missing method to return only dataframe (#8565) (#8644)     |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
diff --git a/airflow/providers/samba/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/samba/PROVIDERS_CHANGES_2020.05.20.md
index 91e5304..2ae98a5 100644
--- a/airflow/providers/samba/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/samba/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                        |
diff --git a/airflow/providers/samba/README.md b/airflow/providers/samba/README.md
index eb13938..ba8e4e1 100644
--- a/airflow/providers/samba/README.md
+++ b/airflow/providers/samba/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `samba` provider. All classes for this provider package
 are in `airflow.providers.samba` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -84,6 +91,7 @@ All classes in Airflow 2.0 are in `airflow.providers.samba` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                        |
diff --git a/airflow/providers/segment/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/segment/PROVIDERS_CHANGES_2020.05.20.md
index 4366704..9e0ca3e 100644
--- a/airflow/providers/segment/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/segment/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/airflow/providers/segment/README.md b/airflow/providers/segment/README.md
index 46721d0..3a35cfe 100644
--- a/airflow/providers/segment/README.md
+++ b/airflow/providers/segment/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `segment` provider. All classes for this provider package
 are in `airflow.providers.segment` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.segment` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/airflow/providers/sftp/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/sftp/PROVIDERS_CHANGES_2020.05.20.md
index fb7d392..c000f2f 100644
--- a/airflow/providers/sftp/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/sftp/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [bac0ab27c](https://github.com/apache/airflow/commit/bac0ab27cfc89e715efddc97214fcd7738084361) | 2020-03-30  | close sftp connection without error (#7953)                                |
diff --git a/airflow/providers/sftp/README.md b/airflow/providers/sftp/README.md
index 2408ac9..173a8a6 100644
--- a/airflow/providers/sftp/README.md
+++ b/airflow/providers/sftp/README.md
@@ -44,6 +44,13 @@ Release: 2020.5.20
 This is a backport providers package for `sftp` provider. All classes for this provider package
 are in `airflow.providers.sftp` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -129,6 +136,7 @@ All classes in Airflow 2.0 are in `airflow.providers.sftp` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [bac0ab27c](https://github.com/apache/airflow/commit/bac0ab27cfc89e715efddc97214fcd7738084361) | 2020-03-30  | close sftp connection without error (#7953)                                |
diff --git a/airflow/providers/singularity/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/singularity/PROVIDERS_CHANGES_2020.05.20.md
index 262e93a..2cf4865 100644
--- a/airflow/providers/singularity/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/singularity/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [42c59755a](https://github.com/apache/airflow/commit/42c59755affd49cd35bea8464e2a4c9256084d88) | 2020-05-09  | Update example SingularityOperator DAG (#8790)                                   |
diff --git a/airflow/providers/singularity/README.md b/airflow/providers/singularity/README.md
index ae0308c..66e0f09 100644
--- a/airflow/providers/singularity/README.md
+++ b/airflow/providers/singularity/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `singularity` provider. All classes for this provider package
 are in `airflow.providers.singularity` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -85,6 +92,7 @@ All classes in Airflow 2.0 are in `airflow.providers.singularity` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                          |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                          |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                     |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)          |
 | [42c59755a](https://github.com/apache/airflow/commit/42c59755affd49cd35bea8464e2a4c9256084d88) | 2020-05-09  | Update example SingularityOperator DAG (#8790)                                   |
diff --git a/airflow/providers/slack/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/slack/PROVIDERS_CHANGES_2020.05.20.md
index c115cb4..ef21820 100644
--- a/airflow/providers/slack/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/slack/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                       |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                       |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                  |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)       |
 | [578fc514c](https://github.com/apache/airflow/commit/578fc514cd325b7d190bdcfb749a384d101238fa) | 2020-05-12  | [AIRFLOW-4543] Update slack operator to support slackclient v2 (#5519)        |
diff --git a/airflow/providers/slack/README.md b/airflow/providers/slack/README.md
index 6f3481e..1f40fa9 100644
--- a/airflow/providers/slack/README.md
+++ b/airflow/providers/slack/README.md
@@ -42,6 +42,13 @@ Release: 2020.5.20
 This is a backport providers package for `slack` provider. All classes for this provider package
 are in `airflow.providers.slack` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -117,6 +124,7 @@ All classes in Airflow 2.0 are in `airflow.providers.slack` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                       |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                       |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                  |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)       |
 | [578fc514c](https://github.com/apache/airflow/commit/578fc514cd325b7d190bdcfb749a384d101238fa) | 2020-05-12  | [AIRFLOW-4543] Update slack operator to support slackclient v2 (#5519)        |
diff --git a/airflow/providers/snowflake/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/snowflake/PROVIDERS_CHANGES_2020.05.20.md
index ccb519a..0dd1a13 100644
--- a/airflow/providers/snowflake/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/snowflake/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [a546a10b1](https://github.com/apache/airflow/commit/a546a10b13b1f7a119071d8d2001cb17ccdcbbf7) | 2020-05-16  | Add Snowflake system test (#8422)                                       |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
diff --git a/airflow/providers/snowflake/README.md b/airflow/providers/snowflake/README.md
index 4652678..0797ad4 100644
--- a/airflow/providers/snowflake/README.md
+++ b/airflow/providers/snowflake/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `snowflake` provider. All classes for this provider package
 are in `airflow.providers.snowflake` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -100,6 +107,7 @@ All classes in Airflow 2.0 are in `airflow.providers.snowflake` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [a546a10b1](https://github.com/apache/airflow/commit/a546a10b13b1f7a119071d8d2001cb17ccdcbbf7) | 2020-05-16  | Add Snowflake system test (#8422)                                       |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
diff --git a/airflow/providers/sqlite/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/sqlite/PROVIDERS_CHANGES_2020.05.20.md
index b0ac98d..86b0dc4 100644
--- a/airflow/providers/sqlite/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/sqlite/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                        |
diff --git a/airflow/providers/sqlite/README.md b/airflow/providers/sqlite/README.md
index 9a07c62..ba25f2e 100644
--- a/airflow/providers/sqlite/README.md
+++ b/airflow/providers/sqlite/README.md
@@ -40,6 +40,13 @@ Release: 2020.5.20
 This is a backport providers package for `sqlite` provider. All classes for this provider package
 are in `airflow.providers.sqlite` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -91,6 +98,7 @@ All classes in Airflow 2.0 are in `airflow.providers.sqlite` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                 |
 |:-----------------------------------------------------------------------------------------------|:------------|:------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                 |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)            |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807) |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                        |
diff --git a/airflow/providers/ssh/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/ssh/PROVIDERS_CHANGES_2020.05.20.md
index 94801c0..6494a37 100644
--- a/airflow/providers/ssh/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/ssh/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [21cc7d729](https://github.com/apache/airflow/commit/21cc7d729827e9f3af0698bf647b2d41fc87b11c) | 2020-05-10  | Document default timeout value for SSHOperator (#8744)                     |
diff --git a/airflow/providers/ssh/README.md b/airflow/providers/ssh/README.md
index 9d9c4cc..a6d37ce 100644
--- a/airflow/providers/ssh/README.md
+++ b/airflow/providers/ssh/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `ssh` provider. All classes for this provider package
 are in `airflow.providers.ssh` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -100,6 +107,7 @@ All classes in Airflow 2.0 are in `airflow.providers.ssh` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                    |
 |:-----------------------------------------------------------------------------------------------|:------------|:---------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                    |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)               |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)    |
 | [21cc7d729](https://github.com/apache/airflow/commit/21cc7d729827e9f3af0698bf647b2d41fc87b11c) | 2020-05-10  | Document default timeout value for SSHOperator (#8744)                     |
diff --git a/airflow/providers/vertica/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/vertica/PROVIDERS_CHANGES_2020.05.20.md
index 1b83fb9..577248d 100644
--- a/airflow/providers/vertica/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/vertica/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/airflow/providers/vertica/README.md b/airflow/providers/vertica/README.md
index ecd087a..731bc11 100644
--- a/airflow/providers/vertica/README.md
+++ b/airflow/providers/vertica/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `vertica` provider. All classes for this provider package
 are in `airflow.providers.vertica` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -98,6 +105,7 @@ All classes in Airflow 2.0 are in `airflow.providers.vertica` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/airflow/providers/yandex/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/yandex/PROVIDERS_CHANGES_2020.05.20.md
index c5b7c94..028fdda 100644
--- a/airflow/providers/yandex/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/yandex/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [59a4f2669](https://github.com/apache/airflow/commit/59a4f26699125b1594496940d62be78d7732b4be) | 2020-04-17  | stop rendering some class docs in wrong place (#8095)                                                                                                              |
diff --git a/airflow/providers/yandex/README.md b/airflow/providers/yandex/README.md
index 9d380b3..6c29be1 100644
--- a/airflow/providers/yandex/README.md
+++ b/airflow/providers/yandex/README.md
@@ -41,6 +41,13 @@ Release: 2020.5.20
 This is a backport providers package for `yandex` provider. All classes for this provider package
 are in `airflow.providers.yandex` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -104,6 +111,7 @@ All classes in Airflow 2.0 are in `airflow.providers.yandex` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                                                                                                            |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                                                                                                            |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)                                                                                                       |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)                                                                                            |
 | [59a4f2669](https://github.com/apache/airflow/commit/59a4f26699125b1594496940d62be78d7732b4be) | 2020-04-17  | stop rendering some class docs in wrong place (#8095)                                                                                                              |
diff --git a/airflow/providers/zendesk/PROVIDERS_CHANGES_2020.05.20.md b/airflow/providers/zendesk/PROVIDERS_CHANGES_2020.05.20.md
index 4366704..9e0ca3e 100644
--- a/airflow/providers/zendesk/PROVIDERS_CHANGES_2020.05.20.md
+++ b/airflow/providers/zendesk/PROVIDERS_CHANGES_2020.05.20.md
@@ -4,6 +4,7 @@
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/airflow/providers/zendesk/README.md b/airflow/providers/zendesk/README.md
index 7458abb..5bb3e45 100644
--- a/airflow/providers/zendesk/README.md
+++ b/airflow/providers/zendesk/README.md
@@ -39,6 +39,13 @@ Release: 2020.5.20
 This is a backport providers package for `zendesk` provider. All classes for this provider package
 are in `airflow.providers.zendesk` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
@@ -84,6 +91,7 @@ All classes in Airflow 2.0 are in `airflow.providers.zendesk` package.
 
 | Commit                                                                                         | Committed   | Subject                                                                  |
 |:-----------------------------------------------------------------------------------------------|:------------|:-------------------------------------------------------------------------|
+| [12c5e5d8a](https://github.com/apache/airflow/commit/12c5e5d8ae25fa633efe63ccf4db389e2b796d79) | 2020-05-17  | Prepare release candidate for backport packages (#8891)                  |
 | [f3521fb0e](https://github.com/apache/airflow/commit/f3521fb0e36733d8bd356123e56a453fd37a6dca) | 2020-05-16  | Regenerate readme files for backport package release (#8886)             |
 | [92585ca4c](https://github.com/apache/airflow/commit/92585ca4cb375ac879f4ab331b3a063106eb7b92) | 2020-05-15  | Added automated release notes generation for backport operators (#8807)  |
 | [4bde99f13](https://github.com/apache/airflow/commit/4bde99f1323d72f6c84c1548079d5e98fc0a2a9a) | 2020-03-23  | Make airflow/providers pylint compatible (#7802)                         |
diff --git a/backport_packages/PROVIDERS_README_TEMPLATE.md.jinja2 b/backport_packages/PROVIDERS_README_TEMPLATE.md.jinja2
index 6acb1ba..fecf6a5 100644
--- a/backport_packages/PROVIDERS_README_TEMPLATE.md.jinja2
+++ b/backport_packages/PROVIDERS_README_TEMPLATE.md.jinja2
@@ -88,6 +88,13 @@ Release: {{ RELEASE_NO_LEADING_ZEROS }}
 This is a backport providers package for `{{PROVIDER_PACKAGE_ID}}` provider. All classes for this provider package
 are in `{{FULL_PACKAGE_NAME}}` python package.
 
+**Only Python 3.6+ is supported for this backport package.**
+
+While Airflow 1.10.* continues to support Python 2.7+ - you need to upgrade python to 3.6+ if you
+want to use this backport package.
+
+{{ ADDITIONAL_INFO }}
+
 ## Installation
 
 You can install this package on top of an existing airflow 1.10.* installation via
diff --git a/backport_packages/setup_backport_packages.py b/backport_packages/setup_backport_packages.py
index 6746e80..8293fe0 100644
--- a/backport_packages/setup_backport_packages.py
+++ b/backport_packages/setup_backport_packages.py
@@ -374,12 +374,13 @@ def do_setup_package_providers(provider_package_id: str,
     install_requires.extend(package_dependencies),
     setuptools_setup(
         name=package_name,
-        description=f'Back-ported {package_name} package for Airflow 1.10.*',
+        description=f'Back-ported {package_prefix}.* package for Airflow 1.10.*',
         long_description=get_long_description(provider_package_id),
         long_description_content_type='text/markdown',
         license='Apache License 2.0',
         version=get_package_release_version(
-            provider_package_id=provider_package_id),
+            provider_package_id=provider_package_id,
+            version_suffix=version_suffix),
         packages=found_packages,
         zip_safe=False,
         install_requires=install_requires,
@@ -445,7 +446,9 @@ def usage() -> None:
     for text in out_array:
         print(text)
     print()
-    print("You can see all packages configured by specifying list-backport-packages as first argument")
+    print("You can see all packages configured by specifying list-providers-packages as first argument")
+    print()
+    print("You can see all backportable packages by specifying list-backportable-packages as first argument")
     print()
     print("You can generate release notes by specifying: update-package-release-notes YYYY.MM.DD [PACKAGES]")
     print()
@@ -970,6 +973,31 @@ def get_package_path(provider_package_id: str) -> str:
     return provider_package_path
 
 
+def get_additional_package_info(provider_package_path: str) -> str:
+    """
+    Returns additional info for the package.
+
+    :param provider_package_path: path for the package
+    :return: additional information for the path (empty string if missing)
+    """
+    additional_info_file_path = os.path.join(provider_package_path, "ADDITIONAL_INFO.md")
+    if os.path.isfile(additional_info_file_path):
+        with open(additional_info_file_path, "rt") as additional_info_file:
+            additional_info = additional_info_file.read()
+
+        additional_info_lines = additional_info.splitlines(keepends=True)
+        result = ""
+        skip_comment = True
+        for line in additional_info_lines:
+            if line.startswith(" -->"):
+                skip_comment = False
+                continue
+            if not skip_comment:
+                result += line
+        return result
+    return ""
+
+
 def update_release_notes_for_package(provider_package_id: str, current_release_version: str) -> None:
     """
     Updates release notes (README.md) for the package.
@@ -1013,6 +1041,7 @@ def update_release_notes_for_package(provider_package_id: str, current_release_v
         "RELEASE": current_release_version,
         "RELEASE_NO_LEADING_ZEROS": strip_leading_zeros(current_release_version),
         "CURRENT_CHANGES_TABLE": changes_table,
+        "ADDITIONAL_INFO": get_additional_package_info(provider_package_path=provider_package_path),
         "CROSS_PROVIDERS_DEPENDENCIES": cross_providers_dependencies,
         "CROSS_PROVIDERS_DEPENDENCIES_TABLE": cross_providers_dependencies_table,
         "PIP_REQUIREMENTS": PROVIDERS_REQUIREMENTS[provider_package_id],
@@ -1074,19 +1103,32 @@ def update_release_notes_for_packages(package_ids: List[str], release_version: s
     import_all_classes(package_ids)
     make_sure_remote_apache_exists()
     if len(package_ids) == 0:
-        package_ids = list(PROVIDERS_REQUIREMENTS.keys())
+        package_ids = get_all_backportable_providers()
     for package in package_ids:
         update_release_notes_for_package(package, release_version)
 
 
+def get_all_backportable_providers() -> List[str]:
+    """
+    Returns all providers that should be taken into account when preparing backports.
+    For now remove cncf.kubernetes as it has no chances to work with current core of Airflow 2.0
+    :return: list of providers that are considered for backport packages
+    """
+    # TODO: Maybe we should fix it and release cncf.kubernetes separately
+    excluded_providers = ["cncf.kubernetes"]
+    return [prov for prov in PROVIDERS_REQUIREMENTS.keys() if prov not in excluded_providers]
+
+
 if __name__ == "__main__":
     PREPARE = "prepare"
-    LIST_BACKPORT_PACKAGES = "list-backport-packages"
+    LIST_PROVIDERS_PACKAGES = "list-providers-packages"
+    LIST_BACKPORTABLE_PACKAGES = "list-backportable-packages"
     UPDATE_PACKAGE_RELEASE_NOTES = "update-package-release-notes"
     suffix = ""
 
     possible_first_params = get_provider_packages()
-    possible_first_params.append(LIST_BACKPORT_PACKAGES)
+    possible_first_params.append(LIST_PROVIDERS_PACKAGES)
+    possible_first_params.append(LIST_BACKPORTABLE_PACKAGES)
     possible_first_params.append(UPDATE_PACKAGE_RELEASE_NOTES)
     possible_first_params.append(PREPARE)
     if len(sys.argv) == 1:
@@ -1095,6 +1137,15 @@ if __name__ == "__main__":
         print()
         usage()
         exit(1)
+    if sys.argv[1] == "--version-suffix":
+        if len(sys.argv) < 3:
+            print()
+            print("ERROR! --version-suffix needs parameter!")
+            print()
+            usage()
+            exit(1)
+        suffix = sys.argv[2]
+        sys.argv = [sys.argv[0]] + sys.argv[3:]
     elif "--help" in sys.argv or "-h" in sys.argv or len(sys.argv) < 2:
         usage()
         exit(0)
@@ -1111,9 +1162,15 @@ if __name__ == "__main__":
         print("Copying sources and doing refactor")
         copy_and_refactor_sources()
         exit(0)
-    elif sys.argv[1] == LIST_BACKPORT_PACKAGES:
-        for key in PROVIDERS_REQUIREMENTS:
-            print(key)
+    elif sys.argv[1] == LIST_PROVIDERS_PACKAGES:
+        providers = PROVIDERS_REQUIREMENTS.keys()
+        for provider in providers:
+            print(provider)
+        exit(0)
+    elif sys.argv[1] == LIST_BACKPORTABLE_PACKAGES:
+        providers = get_all_backportable_providers()
+        for provider in providers:
+            print(provider)
         exit(0)
     elif sys.argv[1] == UPDATE_PACKAGE_RELEASE_NOTES:
         if len(sys.argv) == 2 or not re.match(r'\d{4}\.\d{2}\.\d{2}', sys.argv[2]):
diff --git a/breeze b/breeze
index 093f81f..b70c862 100755
--- a/breeze
+++ b/breeze
@@ -70,7 +70,7 @@ function setup_default_breeze_variables() {
 
     # We have different versions of images depending on the python version used. We keep up with the
     # Latest patch-level changes in Python (this is done automatically during CI builds) so we have
-    # To only take into account MAJOR and MINOR version of python. This variable keeps the major/mninor
+    # To only take into account MAJOR and MINOR version of python. This variable keeps the major/minor
     # version of python in X.Y format (3.6, 3.7 etc).
     export PYTHON_MAJOR_MINOR_VERSION="${PYTHON_MAJOR_MINOR_VERSION:=$(read_from_file PYTHON_MAJOR_MINOR_VERSION)}"
 
@@ -161,7 +161,7 @@ function setup_default_breeze_variables() {
 
 # Initializes development-friendly virtualenv if you are already in such env. It installs all the necessary
 # packages from PyPI and it case of problems it provides useful hints on what prerequisites should be
-# installed. It also removes and resets the existing AIRFOW_HOME installation to make sure that you
+# installed. It also removes and resets the existing AIRFLOW_HOME installation to make sure that you
 # have it synchronized with the version of airflow installed. It resets the airflow's sqlite database to
 # a clean state. You can use this function if your virtualenv is broken, to clean it up
 function initialize_virtualenv() {
@@ -793,9 +793,26 @@ function parse_arguments() {
           export PUSH_IMAGES="true"
           export FORCE_BUILD_IMAGES="true"
           shift ;;
-        -S|--version-suffix)
-          export VERSION_SUFFIX="${2}"
-          echo "Dockerhub repo ${VERSION_SUFFIX}"
+        -S|--version-suffix-for-pypi)
+          if [[ ${VERSION_SUFFIX_FOR_SVN} != "" ]]; then
+              echo
+              echo "You can only set one version suffix - either for PyPI or for SVN"
+              echo
+              exit 1
+          fi
+          export VERSION_SUFFIX_FOR_PYPI="${2}"
+          echo "Version suffix for PyPI ${VERSION_SUFFIX_FOR_PYPI}"
+          echo
+          shift 2 ;;
+        -N|--version-suffix-for-svn)
+          if [[ ${VERSION_SUFFIX_FOR_PYPI} != "" ]]; then
+              echo
+              echo "You can only set one version suffix - either for PyPI or for SVN"
+              echo
+              exit 1
+          fi
+          export VERSION_SUFFIX_FOR_SVN="${2}"
+          echo "Version suffix for SVN ${VERSION_SUFFIX_FOR_SVN}"
           echo
           shift 2 ;;
         --)
@@ -864,9 +881,9 @@ function parse_arguments() {
           LAST_SUBCOMMAND="${1}"
           COMMAND_TO_RUN="perform_prepare_backport_packages"
           shift ;;
-        generate-backport-readme)
+        prepare-backport-readme)
           LAST_SUBCOMMAND="${1}"
-          COMMAND_TO_RUN="perform_generate_backport_readme"
+          COMMAND_TO_RUN="perform_prepare_backport_readme"
           shift ;;
         initialize-local-virtualenv)
           LAST_SUBCOMMAND="${1}"
@@ -1055,7 +1072,7 @@ function prepare_usage() {
     export USAGE_DOCKER_COMPOSE="Executes specified docker-compose command"
     export USAGE_EXECUTE_COMMAND="Executes specified command in the container"
     export USAGE_FLAGS="Shows all breeze's flags"
-    export USAGE_GENERATE_BACKPORT_README="Generates backport packages readme files"
+    export USAGE_PREPARE_BACKPORT_README="Prepares backport packages readme files"
     export USAGE_GENERATE_REQUIREMENTS="Generates pinned requirements for pip dependencies"
     export USAGE_INITIALIZE_LOCAL_VIRTUALENV="Initializes local virtualenv"
     export USAGE_SETUP_AUTOCOMPLETE="Sets up autocomplete for breeze"
@@ -1172,7 +1189,7 @@ $(flag_verbosity)
       Explains in detail all the flags that can be used with breeze.
 "
     # shellcheck disable=SC2089
-    DETAILED_USAGE_GENERATE_BACKPORT_README="
+    DETAILED_USAGE_PREPARE_BACKPORT_README="
       Prepares README.md files for backport packages. You can provide (after --) optional version
       in the form of YYYY.MM.DD, optionally followed by the list of packages to generate readme for.
       If the first parameter is not formatted as a date, then today is used as version.
@@ -1181,13 +1198,13 @@ $(flag_verbosity)
 
       Examples:
 
-      '${CMDNAME} generate-backport-readme' or
-      '${CMDNAME} generate-backport-readme -- 2020.05.10' or
-      '${CMDNAME} generate-backport-readme -- 2020.05.10 https google amazon'
+      '${CMDNAME} prepare-backport-readme' or
+      '${CMDNAME} prepare-backport-readme -- 2020.05.10' or
+      '${CMDNAME} prepare-backport-readme -- 2020.05.10 https google amazon'
 
       General form:
 
-      '${CMDNAME} generate-backport-readme -- YYYY.MM.DD <PACKAGE_ID> ...'
+      '${CMDNAME} prepare-backport-readme -- YYYY.MM.DD <PACKAGE_ID> ...'
 
       * YYYY.MM.DD - is the CALVER version of the package to prepare. Note that this date
         cannot be earlier than the already released version (the script will fail if it
@@ -1201,7 +1218,7 @@ Flags:
 $(flag_verbosity)
 "
     # shellcheck disable=SC2090
-    export DETAILED_USAGE_GENERATE_BACKPORT_README
+    export DETAILED_USAGE_PREPARE_BACKPORT_README
     DETAILED_USAGE_GENERATE_REQUIREMENTS="
       Generates pinned requirements from setup.py. Those requirements are generated in requirements
       directory - separately for different python version. Those requirements are used to run
@@ -1231,19 +1248,20 @@ $(flag_airflow_variants)
     DETAILED_USAGE_PREPARE_BACKPORT_PACKAGES="
       Builds backport packages. You can provide (after --) optional list of packages to prepare.
       If no packages are specified, readme for all packages are generated. You can specify optional
-      --version-suffix flag to generate rc candidates for the packages.
-
-      Make sure to set the right version in './backport_packages/setup_backport_packages.py'
+      --version-suffix-for-svn flag to generate rc candidate packages to upload to SVN or
+      --version-suffix-for-pypi flag to generate rc candidates for PyPI packages.
 
       Examples:
 
       '${CMDNAME} prepare-backport-packages' or
       '${CMDNAME} prepare-backport-packages -- google' or
-      '${CMDNAME} prepare-backport-packages --version-suffix rc1 -- http google amazon'
+      '${CMDNAME} prepare-backport-packages --version-suffix-for-svn rc1 -- http google amazon' or
+      '${CMDNAME} prepare-backport-packages --version-suffix-for-pypi rc1 -- http google amazon'
 
       General form:
 
-      '${CMDNAME} prepare-backport-packages -- <PACKAGE_ID> ...'
+      '${CMDNAME} prepare-backport-packages \\
+            [--version-suffix-for-svn|--version-suffix-for-pypi] -- <PACKAGE_ID> ...'
 
       * <PACKAGE_ID> is usually directory in the airflow/providers folder (for example
         'google'), but in several cases, it might be one level deeper separated with '.'
@@ -1629,9 +1647,13 @@ function flag_push_docker_images() {
 # Prints flags that control version of generated packages
 function flag_version_suffix() {
       echo "
--S, --version-suffix
-        Adds optional suffix to the generated backport package version. It can be used to generate
-        rc1/rc2 ... versions of the packages.
+-S, --version-suffix-for-pypi
+        Adds optional suffix to the version in the generated backport package. It can be used
+        to generate rc1/rc2 ... versions of the packages to be uploaded to PyPI.
+
+-N, --version-suffix-for-svn
+        Adds optional suffix to the generated names of package. It can be used to generate
+        rc1/rc2 ... versions of the packages to be uploaded to SVN.
 "
 }
 
@@ -1904,7 +1926,7 @@ function run_static_checks {
     fi
 }
 
-# Runs Build before a comman - it will check and if needed rebuild necessary image, depending on the
+# Runs Build before a command - it will check and if needed rebuild necessary image, depending on the
 # command chosen
 function run_build_command {
     case "${COMMAND_TO_RUN}" in
@@ -1920,7 +1942,7 @@ function run_build_command {
                 rebuild_ci_image_if_needed
             fi
             ;;
-        build_docs|perform_static_checks|perform_generate_requirements|perform_generate_backport_readme|perform_prepare_backport_packages)
+        build_docs|perform_static_checks|perform_generate_requirements|perform_prepare_backport_readme|perform_prepare_backport_packages)
             prepare_ci_build
             rebuild_ci_image_if_needed
             ;;
@@ -2022,8 +2044,8 @@ function run_breeze_command {
         perform_prepare_backport_packages)
             run_prepare_backport_packages "${@}"
             ;;
-        perform_generate_backport_readme)
-            run_generate_backport_readme "${@}"
+        perform_prepare_backport_readme)
+            run_prepare_backport_readme "${@}"
             ;;
         perform_initialize_local_virtualenv)
             initialize_virtualenv
diff --git a/breeze-complete b/breeze-complete
index 59d173f..1fa0d58 100644
--- a/breeze-complete
+++ b/breeze-complete
@@ -98,7 +98,7 @@ l a: t: d:
 v y n q f
 F P I E: C L
 D: R: u
-S:
+S: N:
 "
 
 _BREEZE_LONG_OPTIONS="
@@ -110,7 +110,7 @@ verbose assume-yes assume-no assume-quit forward-credentials
 force-build-images force-pull-images production-image extras: force-clean-images use-local-cache
 dockerhub-user: dockerhub-repo: push-images
 postgres-version: mysql-version:
-version-suffix:
+version-suffix-for-pypi: version-suffix-for-svn:
 "
 
 export BREEZE_COMMANDS="
@@ -120,7 +120,7 @@ build-image
 cleanup-image
 exec
 generate-requirements
-generate-backport-readme
+prepare-backport-readme
 prepare-backport-packages
 initialize-local-virtualenv
 setup-autocomplete
diff --git a/dev/BACKPORT_PACKAGES.md b/dev/BACKPORT_PACKAGES.md
index d08c7af..11bfa65 100644
--- a/dev/BACKPORT_PACKAGES.md
+++ b/dev/BACKPORT_PACKAGES.md
@@ -27,9 +27,8 @@
 - [Content of the release notes](#content-of-the-release-notes)
 - [Preparing backport packages](#preparing-backport-packages)
 - [Releasing the packages](#releasing-the-packages)
-  - [Building an RC](#building-an-rc)
-  - [Make sure your public key is on id.apache.org and in KEYS](#make-sure-your-public-key-is-on-idapacheorg-and-in-keys)
-  - [Publishing to PyPi](#publishing-to-pypi)
+  - [Building an RC for SVN apache upload](#building-an-rc-for-svn-apache-upload)
+  - [Publishing the RC to PyPI](#publishing-the-rc-to-pypi)
   - [Voting on RC candidates](#voting-on-rc-candidates)
   - [Publishing the final release](#publishing-the-final-release)
 
@@ -71,7 +70,7 @@ separately.
 When you want to prepare release notes for a package, you need to run:
 
 ```
-./breeze generate-backport-readme -- YYYY.MM.DD <PACKAGE_ID> ...
+./breeze prepare-backport-readme -- YYYY.MM.DD <PACKAGE_ID> ...
 ```
 
 
@@ -145,19 +144,35 @@ providers by running:
 ./breeze prepare-backport-packages -- --help
 ```
 
-* To build the release packages (release candidates) run the following command:
+The examples below show how you can build selected packages, but you can also build all packages by
+omitting the package ids altogether.
+
+* To build the release candidate packages for SVN Apache upload run the following command:
+
+```bash
+./breeze prepare-backport-packages --version-suffix-for-svn=rc1 -- [PACKAGE_ID] ...
+```
+
+for example:
 
 ```bash
-./breeze prepare-backport-packages --version-suffux=rc1 -- [PACKAGE_ID] ...
+./breeze prepare-backport-packages --version-suffix-for-svn=rc1 -- http ...
+```
+
+* To build the release candidate packages for PyPI upload run the following command:
+
+```bash
+./breeze prepare-backport-packages --version-suffix-for-pypi=rc1 -- [PACKAGE_ID] ...
 ```
 
 for example:
 
 ```bash
-./breeze prepare-backport-packages --version-suffix=rc1 -- http ...
+./breeze prepare-backport-packages --version-suffix-for-pypi=rc1 -- http ...
 ```
 
-* To build the release packages run the following command:
+
+* To build the final release packages run the following command:
 
 ```bash
 ./breeze prepare-backport-packages -- [PACKAGE_ID] ...
@@ -168,32 +183,72 @@ for example:
 ./breeze prepare-backport-packages -- http ...
 ```
 
-You can also build all packages by omitting the package id altogether.
-
-* This creates a wheel package and source distribution packages in your `dist` folder with
-  names similar to the below:
+* For each package, this creates a wheel package and source distribution package in your `dist` folder with
+  names following the patterns:
 
-  * `apache_airflow_backport_providers_<PROVIDER>_YYYY.MM.DD-py2.py3-none-any.whl`
-  * `apache-airflow-backport-providers-<PROVIDER>-YYYY.MM.DD.tar.gz`
+  * `apache_airflow_backport_providers_<PROVIDER>_YYYY.[M]M.[D]D[suffix]-py3-none-any.whl`
+  * `apache-airflow-backport-providers-<PROVIDER>-YYYY.[M]M.[D]D[suffix].tar.gz`
 
-* You can install this package with `pip install <PACKAGE_FILE>`
+Note! Even if we always use the two-digit month and day when generating the readme files,
+the version in PyPI does not contain the leading 0s in version name - therefore the artifacts generated
+also do not container the leading 0s.
 
+* You can install the .whl packages with `pip install <PACKAGE_FILE>`
 
 # Releasing the packages
 
-## Building an RC
+## Building an RC for SVN apache upload
 
 The Release Candidate artifacts we vote upon should be the exact ones we vote against, without any
-modification than renaming – i.e. the contents of the files must be the same between voted
+modification than renaming i.e. the contents of the files must be the same between voted
 release candidate and final release. Because of this the version in the built artifacts
-that will become the official Apache releases must not include the rcN suffix.
+that will become the official Apache releases must not include the rcN suffix. They also need
+to be signed and have checksum files. You can generate the checksum/signature files by running
+the "dev/sign.sh" script (assuming you have the right PGP key set-up for signing). The script
+generates corresponding .asc and .sha512 files for each file to sign.
+
+
+### Make sure your public key is on id.apache.org and in KEYS
+
+You will need to sign the release artifacts with your pgp key. After you have created a key, make sure you:
+
+* Add your GPG pub key to [KEYS](https://dist.apache.org/repos/dist/release/airflow/KEYS) ,
+  follow the instructions at the top of that file. Upload your GPG public key to https://pgp.mit.edu
+
+* Add your key fingerprint to [https://id.apache.org]/https://id.apache.org/ (login with your apache
+  credentials, paste your fingerprint into the pgp fingerprint field and hit save).
+
+* In case you do not have your key you can generate one using this command. Ideally use your `@apache.org`
+  id for the key.
+
+```bash
+# Create PGP Key
+gpg --gen-key
+```
+
+* Update your key in the committer's key repo
+
+```bash
+# Checkout ASF dist repo
+svn checkout https://dist.apache.org/repos/dist/release/airflow
+cd airflow
+
+
+# Add your GPG pub key to KEYS file. Replace "<Your ID>" with your @apache.org id
+(gpg --list-sigs "<Your ID>" && gpg --armor --export "<Your ID>" ) >> KEYS
+
+
+# Commit the changes
+svn commit -m "Add PGP key for <Your ID>>"
+```
+
+### Building and signing the packages
 
-Note! that the version in PyPI does not contain the leading 0s in version name.
 
 * Set environment variables (version and root of airflow repo)
 
 ```bash
-export VERSION=2020.5.19rc2
+export VERSION=2020.5.20rc2
 export AIRFLOW_REPO_ROOT=$(pwd)
 
 ```
@@ -201,7 +256,7 @@ export AIRFLOW_REPO_ROOT=$(pwd)
 * Tag the release
 
 ```bash
-git tag ${VERSION}
+git tag backport-providers-${VERSION}
 ```
 
 * Clean the checkout
@@ -213,15 +268,25 @@ git clean -fxd
 * Tarball the sources
 
 ```bash
-git archive --format=tar.gz ${VERSION} --prefix=apache-airflow-${VERSION}/ -o apache-airflow-backport-providers-${VERSION}-source.tar.gz
+git archive \
+    --format=tar.gz \
+    backport-providers-${VERSION} \
+    --prefix=apache-airflow-backport-providers-${VERSION}/ \
+    -o apache-airflow-backport-providers-${VERSION}-source.tar.gz
 ```
 
-* Generate the packages (specify the version suffix, optionally list of packages).
+* Generate the packages - since we are preparing packages for SVN repo, we should use the right switch. Note
+  that this will clean up dist folder before generating the packages, so it will only contain the packages
+  you intended to build.
 
-This will clean up dist folder before generating the packages
+```bash
+./breeze prepare-backport-packages --version-suffix-for-svn rc1
+```
+
+if you ony build few packages, run:
 
 ```bash
-./breeze prepare-backport-packages --version-suffix rc2 -- [PACKAGE ...]
+./breeze prepare-backport-packages --version-suffix-for-svn rc1 -- PACKAGE PACKAGE ....
 ```
 
 * Move the source tarball to dist folder
@@ -233,8 +298,7 @@ mv apache-airflow-backport-providers-${VERSION}-source.tar.gz dist
 * Sign all your packages
 
 ```bash
-cd dist
-../dev/sign.sh *.tar.gz *.whl
+./dev/sign.sh dist/*
 ```
 
 * Push tags
@@ -243,54 +307,52 @@ cd dist
 git push --tags
 ```
 
+### Committing the packages to Apache SVN repo
+
 * Push the artifacts to ASF dev dist repo
 
 ```bash
-# First clone the repo
+# First clone the repo if you do not have it
 svn checkout https://dist.apache.org/repos/dist/dev/airflow airflow-dev
 
-# Create a new folder for the release
+# update the repo in case you have it already
+cd airflow-dev
+svn update
+
+# Create a new folder for the release.
 cd airflow-dev/backport-providers
 svn mkdir ${VERSION}
 
-# Move the artifacts to svn folder & commit
-mv ${AIRFLOW_REPO_ROOT}/dist/apache{-,_}airflow-${VERSION}* ${VERSION}/
-mv ${AIRFLOW_REPO_ROOT}/apache-airflow-backport-providers-${VERSION}-source.tar.gz ${VERSION}/
+# Move the artifacts to svn folder
+mv ${AIRFLOW_REPO_ROOT}/dist/* ${VERSION}/
 
-cd ${VERSION}
-svn add *
+# Add and commit
+svn add ${VERSION}/*
 svn commit -m "Add artifacts for Airflow ${VERSION}"
+
 cd ${AIRFLOW_REPO_ROOT}
 ```
 
-## Make sure your public key is on id.apache.org and in KEYS
+Verify that the files are available at
+[backport-providers](https://dist.apache.org/repos/dist/dev/airflow/backport-providers/)
 
-You will need to sign the release artifacts with your pgp key. After you have created a key, make sure you:
-
-* Add your GPG pub key to [KEYS](https://dist.apache.org/repos/dist/release/airflow/KEYS) ,
-  follow the instructions at the top of that file. Upload your GPG public key to https://pgp.mit.edu
-* Add your key fingerprint to [https://id.apache.org]/https://id.apache.org/ (login with your apache
-  credentials, paste your fingerprint into the pgp fingerprint field and hit save).
 
-```bash
-# Create PGP Key
-gpg --gen-key
-
-# Checkout ASF dist repo
-svn checkout https://dist.apache.org/repos/dist/release/airflow
-cd airflow
+## Publishing the RC to PyPI
 
+In order to publish to PyPI you just need to build and release packages. The packages should however
+contain the rcN suffix in the version name as well, so you need to use `--version-suffix-for-pypi` switch
+to prepare those packages. Note that these are different packages than the ones used for SVN upload
+though they should be generated from the same sources.
 
-# Add your GPG pub key to KEYS file. Replace "Kaxil Naik" with your name
-(gpg --list-sigs "Kaxil Naik" && gpg --armor --export "Kaxil Naik" ) >> KEYS
+### Configure your PyPI uploads
 
+In order to not reveal your password in plain text, it's best if you create and configure API Upload tokens.
+You can add and copy the tokens here:
 
-# Commit the changes
-svn commit -m "Add PGP keys of Airflow developers"
-```
+* [Test PyPI](https://test.pypi.org/manage/account/token/)
+* [Prod PyPI](https://pypi.org/manage/account/token/)
 
 
-## Publishing to PyPi
 Create a ~/.pypirc file:
 
 ```bash
@@ -300,11 +362,14 @@ index-servers =
   pypitest
 
 [pypi]
-username=your-username
+username=__token__
+password=<API Upload Token>
 
 [pypitest]
 repository=https://test.pypi.org/legacy/
-username=your-username
+username=__token__
+password=<API Upload Token>
+
 ```
 
 Set proper permissions for the pypirc file:
@@ -319,6 +384,21 @@ $ chmod 600 ~/.pypirc
 pip install twine
 ```
 
+### Generate PyPI packages
+
+* Generate the packages with the right RC version (specify the version suffix with PyPI switch). Note that
+this will clean up dist folder before generating the packages so you will only have the right packages there.
+
+```bash
+./breeze prepare-backport-packages --version-suffix-for-pypi rc1
+```
+
+if you ony build few packages, run:
+
+```bash
+./breeze prepare-backport-packages --version-suffix-for-pypi rc1 -- PACKAGE PACKAGE ....
+```
+
 * Verify the artifacts that would be uploaded:
 
 ```bash
@@ -331,8 +411,8 @@ twine check dist/*
 twine upload -r pypitest dist/*
 ```
 
-* Verify that the test packages looks good by downloading it and installing them into a virtual environment.
-Twine prints the package linksas output - separately for each package.
+* Verify that the test packages look good by downloading it and installing them into a virtual environment.
+Twine prints the package links as output - separately for each package.
 
 * Upload the package to PyPi's production environment:
 
@@ -342,42 +422,51 @@ twine upload -r pypi dist/*
 
 Copy the list of links to the uploaded packages - they will be useful in preparing VOTE email.
 
-* Again, confirm that the packages are available under the links displayed.
+* Again, confirm that the packages are available under the links printed.
 
 ## Voting on RC candidates
 
 Make sure the packages are in https://dist.apache.org/repos/dist/dev/airflow/backport-providers/
 
-Use the dev/airflow-jira script to generate a list of Airflow JIRAs that were closed in the release.
+Send out a vote to the dev@airflow.apache.org mailing list. Here you can prepare text of the
+email using the ${VERSION} variable you already set in the command line.
 
-Send out a vote to the dev@airflow.apache.org mailing list:
+```bash
+cat <<EOF
 
-```text
-[VOTE] Airflow Backport Providers 2020.5.19rc2
+[VOTE] Airflow Backport Providers ${VERSION}
 
 Hey all,
 
-I have cut Airflow Backport Providers 2020.5.19rc2. This email is calling a vote on the release,
-which will last for 72 hours - which means that it will end on YYYY,MM.DD TZN.
+I have cut Airflow Backport Providers ${VERSION}. This email is calling a vote on the release,
+which will last for 72 hours - which means that it will end on $(date -d '+3 days').
 
 Consider this my (binding) +1.
 
-Airflow Backport Providers 2020.5.19rc2 are available at:
-https://dist.apache.org/repos/dist/dev/airflow/backport-providers/2020.5.19/
+Airflow Backport Providers ${VERSION} are available at:
+https://dist.apache.org/repos/dist/dev/airflow/backport-providers/${VERSION}/
 
-*apache-airflow-backport-providers-2020.5.19rc2-source.tar.gz* is a source release that comes
-with INSTALL instructions.
+*apache-airflow-backport-providers-${VERSION}-source.tar.gz* is a source release that comes
+ with INSTALL instructions.
 
-*apache-airflow-backport-providers-PROVIDER-2020.5.19rc2-bin.tar.gz* is the binary Python "sdist" release.
+*apache-airflow-backport-providers-<PROVIDER>-${VERSION}-bin.tar.gz* are the binary
+ Python "sdist" release.
 
 Public keys are available at:
 https://dist.apache.org/repos/dist/release/airflow/KEYS
 
+Please vote accordingly:
+
+[ ] +1 approve
+[ ] +0 no opinion
+[ ] -1 disapprove with the reason
+
+
 Only votes from PMC members are binding, but members of the community are
 encouraged to test the release and vote with "(non-binding)".
 
-Please note that the version number excludes the `rcX` string, so it's now
-simply 2020.5.19. This will allow us to rename the artifact without modifying
+Please note that the version number excludes the 'rcX' string, so it's now
+simply ${VERSION%rc?}. This will allow us to rename the artifact without modifying
 the artifact checksums when we actually release.
 
 Each of the packages contains detailed changelog. Here is the list of links to
@@ -386,20 +475,25 @@ the released packages and changelogs:
 TODO: Paste the result of twine upload
 
 Cheers,
-<your name>
+<TODO: Your Name>
+
+EOF
+
 ```
 
 * Once the vote has been passed, you will need to send a result vote to dev@airflow.apache.org:
 
-```text
-[RESULT][VOTE] Airflow Backport Providers 2020.5.19rc2
+```bash
+
+cat <<EOF
+[RESULT][VOTE] Airflow Backport Providers ${VERSION}
 
 
 Hey all,
 
-Airflow Backport Providers 2020.5.19 (based on RC2) has been accepted.
+Airflow Backport Providers ${VERSION%rc?} (based on the rc candidate) has been accepted.
 
-N “+1” binding votes received:
+N "+1" binding votes received:
 - PMC Member  (binding)
 ...
 
@@ -408,15 +502,53 @@ N "+1" non-binding votes received:
 - COMMITER (non-binding)
 
 Vote thread:
-https://lists.apache.org/thread.html/NNNN@%3Cdev.airflow.apache.org%3E
+https://lists.apache.org/thread.html/<TODO:REPLACE_ME_WITH_THE_VOTING_THREAD>@%3Cdev.airflow.apache.org%3E
 
 I'll continue with the release process and the release announcement will follow shortly.
 
 Cheers,
-<your name>
+<TODO: Your Name>
+
+EOF
 
 ```
 
 ## Publishing the final release
 
-TODO:
+After the votes pass (see above), you need to migrate the RC artifacts that passed to this repository:
+https://dist.apache.org/repos/dist/release/airflow/
+The migration should include renaming of the files so that they no longer have the RC number in their
+filenames.
+
+### Copying latest release candidates to releae
+
+The best way of doing this is to svn cp  between the two repos (this avoids having to upload the binaries
+again, and gives a clearer history in the svn commit logs.
+
+We also need to archive older releases before copying the new ones
+[Release policy](http://www.apache.org/legal/release-policy.html#when-to-archive)
+
+
+```bash
+# Set the variables
+export VERSION_RC=2020.5.20rc2
+export VERSION=${RC/rc?/}
+
+# First clone the repo if it's not done yet
+svn checkout https://dist.apache.org/repos/dist/release/airflow airflow-release
+
+# Create new folder for the release
+cd airflow-release
+svn update
+
+# Create backport-providers folder if it does not exist
+# All latest releases are ketp in this one folder without version sub-folder
+mkdir backport-providers
+
+# Move the artifacts to svn folder & delete old releases
+# TODO: develop script to do it
+
+
+# Commit to SVN
+svn commit -m "Release Airflow ${VERSION} from ${VERSION_RC}"
+```
diff --git a/dev/templates/vote_email.j2 b/dev/templates/vote_email.j2
index 9c20d16..71da65c 100644
--- a/dev/templates/vote_email.j2
+++ b/dev/templates/vote_email.j2
@@ -30,7 +30,7 @@ https://dist.apache.org/repos/dist/dev/airflow/{{ version_rc }}/
 *apache-airflow-{{ version_rc }}-source.tar.gz* is a source release that comes
 with INSTALL instructions.
 *apache-airflow-{{ version_rc }}-bin.tar.gz* is the binary Python "sdist" release.
-*apache_airflow-{{ version_rc }}-py2.py3-none-any.whl* is the binary Python wheel release.
+*apache_airflow-{{ version_rc }}-py3-none-any.whl* is the binary Python wheel release.
 
 Public keys are available at: https://www.apache.org/dist/airflow/KEYS
 
diff --git a/scripts/ci/_utils.sh b/scripts/ci/_utils.sh
index b0bc276..364ff71 100644
--- a/scripts/ci/_utils.sh
+++ b/scripts/ci/_utils.sh
@@ -222,8 +222,11 @@ function initialize_common_environment {
     # Determines if airflow should be installed from a specified reference in GitHub
     export INSTALL_AIRFLOW_REFERENCE=""
 
-    # Version suffix for the generated backport packages
-    export VERSION_SUFFIX=""
+    # Version suffix for PyPI packaging
+    export VERSION_SUFFIX_FOR_PYPI=""
+
+    # Artifact name suffix for SVN packaging
+    export VERSION_SUFFIX_FOR_SVN=""
 }
 
 # Prints verbose information in case VERBOSE variable is set
@@ -253,7 +256,7 @@ LICENSE /opt/airflow/
 MANIFEST.in /opt/airflow/
 NOTICE /opt/airflow/
 airflow /opt/airflow/
-backport_packages/setup_backport_packages.py /opt/airflow/backport_packages/
+backport_packages /opt/airflow/
 common /opt/airflow/
 dags /opt/airflow/
 dev /opt/airflow/
@@ -1649,7 +1652,8 @@ function run_prepare_backport_packages() {
         --env UPGRADE_WHILE_GENERATING_REQUIREMENTS \
         --env PYTHON_MAJOR_MINOR_VERSION \
         --env CHECK_REQUIREMENTS_ONLY \
-        --env VERSION_SUFFIX \
+        --env VERSION_SUFFIX_FOR_PYPI \
+        --env VERSION_SUFFIX_FOR_SVN \
         -t \
         -v "${AIRFLOW_SOURCES}:/opt/airflow" \
         --rm \
@@ -1659,7 +1663,7 @@ function run_prepare_backport_packages() {
 }
 
 # Docker command to generate release notes for backport packages
-function run_generate_backport_readme() {
+function run_prepare_backport_readme() {
     docker run "${EXTRA_DOCKER_FLAGS[@]}" \
         --entrypoint "/usr/local/bin/dumb-init"  \
         --env PYTHONDONTWRITEBYTECODE \
@@ -1674,7 +1678,7 @@ function run_generate_backport_readme() {
         -v "${AIRFLOW_SOURCES}:/opt/airflow" \
         --rm \
         "${AIRFLOW_CI_IMAGE}" \
-        "--" "/opt/airflow/scripts/ci/in_container/run_generate_backport_readme.sh" "${@}" \
+        "--" "/opt/airflow/scripts/ci/in_container/run_prepare_backport_readme.sh" "${@}" \
         | tee -a "${OUTPUT_LOG}"
 }
 
diff --git a/scripts/ci/ci_prepare_and_test_backport_packages.sh b/scripts/ci/ci_prepare_and_test_backport_packages.sh
index b5cef37..575dc15 100755
--- a/scripts/ci/ci_prepare_and_test_backport_packages.sh
+++ b/scripts/ci/ci_prepare_and_test_backport_packages.sh
@@ -20,7 +20,7 @@ export PYTHON_MAJOR_MINOR_VERSION=${PYTHON_MAJOR_MINOR_VERSION:-3.6}
 # shellcheck source=scripts/ci/_script_init.sh
 . "$( dirname "${BASH_SOURCE[0]}" )/_script_init.sh"
 
-"${MY_DIR}/ci_generate_backport_readme.sh"
+"${MY_DIR}/ci_prepare_backport_readme.sh"
 "${MY_DIR}/ci_prepare_backport_packages.sh"
 "${MY_DIR}/ci_test_backport_packages.sh"
 
diff --git a/scripts/ci/ci_generate_backport_readme.sh b/scripts/ci/ci_prepare_backport_readme.sh
similarity index 96%
rename from scripts/ci/ci_generate_backport_readme.sh
rename to scripts/ci/ci_prepare_backport_readme.sh
index eee5d70..b57a492 100755
--- a/scripts/ci/ci_generate_backport_readme.sh
+++ b/scripts/ci/ci_prepare_backport_readme.sh
@@ -26,4 +26,4 @@ prepare_ci_build
 
 rebuild_ci_image_if_needed
 
-run_generate_backport_readme "$@"
+run_prepare_backport_readme "$@"
diff --git a/scripts/ci/docker-compose/local.yml b/scripts/ci/docker-compose/local.yml
index 0373d31..8062147 100644
--- a/scripts/ci/docker-compose/local.yml
+++ b/scripts/ci/docker-compose/local.yml
@@ -40,7 +40,7 @@ services:
       - ../../../MANIFEST.in:/opt/airflow/MANIFEST.in:cached
       - ../../../NOTICE:/opt/airflow/NOTICE:cached
       - ../../../airflow:/opt/airflow/airflow:cached
-      - ../../../backport_packages/setup_backport_packages.py:/opt/airflow/backport_packages/setup_backport_packages.py:cached
+      - ../../../backport_packages:/opt/airflow/backport_packages:cached
       - ../../../common:/opt/airflow/common:cached
       - ../../../dags:/opt/airflow/dags:cached
       - ../../../dev:/opt/airflow/dev:cached
diff --git a/scripts/ci/in_container/run_prepare_backport_packages.sh b/scripts/ci/in_container/run_prepare_backport_packages.sh
index 3bef306..3a8c284 100755
--- a/scripts/ci/in_container/run_prepare_backport_packages.sh
+++ b/scripts/ci/in_container/run_prepare_backport_packages.sh
@@ -36,11 +36,11 @@ rm -rf dist/*
 rm -rf -- *.egg-info
 
 if [[ -z "$*" ]]; then
-    BACKPORT_PACKAGES=$(python3 setup_backport_packages.py list-backport-packages)
+    PROVIDERS_PACKAGES=$(python3 setup_backport_packages.py list-providers-packages)
 
     PACKAGE_ERROR="false"
     # Check if all providers are included
-    for PACKAGE in ${BACKPORT_PACKAGES}
+    for PACKAGE in ${PROVIDERS_PACKAGES}
     do
         if ! grep -E "^${PACKAGE}" <"${LIST_OF_DIRS_FILE}" >/dev/null; then
             echo "The package ${PACKAGE} is not available in providers dir"
@@ -64,6 +64,7 @@ if [[ -z "$*" ]]; then
         echo
         exit 1
     fi
+    BACKPORT_PACKAGES=$(python3 setup_backport_packages.py list-backportable-packages)
 else
     if [[ "$1" == "--help" ]]; then
         echo
@@ -71,7 +72,7 @@ else
         echo
         echo "You can provide list of packages to build out of:"
         echo
-        python3 setup_backport_packages.py list-backport-packages | tr '\n ' ' ' | fold -w 100 -s
+        python3 setup_backport_packages.py list-providers-packages | tr '\n ' ' ' | fold -w 100 -s
         echo
         echo
         exit
@@ -84,7 +85,11 @@ echo " Copying sources and doing refactor for backport packages"
 echo "==================================================================================="
 python3 setup_backport_packages.py prepare
 
-VERSION_SUFFIX=${VERSION_SUFFIX:=""}
+VERSION_SUFFIX_FOR_PYPI=${VERSION_SUFFIX_FOR_PYPI:=""}
+VERSION_SUFFIX_FOR_SVN=${VERSION_SUFFIX_FOR_SVN:=""}
+
+echo "Version suffix for PyPI= ${VERSION_SUFFIX_FOR_PYPI}"
+echo "Version suffix for SVN = ${VERSION_SUFFIX_FOR_SVN}"
 
 
 for BACKPORT_PACKAGE in ${BACKPORT_PACKAGES}
@@ -95,7 +100,7 @@ do
     echo "-----------------------------------------------------------------------------------"
     python3 setup_backport_packages.py "${BACKPORT_PACKAGE}" clean --all >/dev/null 2>&1
     set +e
-    python3 setup_backport_packages.py \
+    python3 setup_backport_packages.py --version-suffix "${VERSION_SUFFIX_FOR_PYPI}" \
         "${BACKPORT_PACKAGE}" sdist bdist_wheel >"${LOG_FILE}" 2>&1
     RES="${?}"
     if [[ ${RES} != "0" ]]; then
@@ -109,20 +114,21 @@ done
 cd "${AIRFLOW_SOURCES}" || exit 1
 
 pushd dist
-for FILE in *.tar.gz
-do
-    mv "${FILE}" "${FILE//\.tar\.gz/${VERSION_SUFFIX}-bin.tar.gz}"
-done
 
-for FILE in *.whl
-do
-    if [[ ${VERSION_SUFFIX} != "" ]]; then
-        mv "${FILE}" "${FILE//\-py2\.py3/${VERSION_SUFFIX}-py2.py3}"
-    fi
-done
+if [[ ${VERSION_SUFFIX_FOR_SVN} != "" ]]; then
+    for FILE in *.tar.gz
+    do
+        mv "${FILE}" "${FILE//\.tar\.gz/${VERSION_SUFFIX_FOR_SVN}-bin.tar.gz}"
+    done
+    for FILE in *.whl
+    do
+        mv "${FILE}" "${FILE//\-py3/${VERSION_SUFFIX_FOR_SVN}-py3}"
+    done
+fi
+
 popd
 
-AIRFLOW_PACKAGES_TGZ_FILE="/tmp/airflow-packages-$(date +"%Y%m%d-%H%M%S")-${VERSION_SUFFIX}.tar.gz"
+AIRFLOW_PACKAGES_TGZ_FILE="/tmp/airflow-packages-$(date +"%Y%m%d-%H%M%S")-${VERSION_SUFFIX_FOR_SVN}${VERSION_SUFFIX_FOR_PYPI}.tar.gz"
 
 tar -cvzf "${AIRFLOW_PACKAGES_TGZ_FILE}" dist/*.whl dist/*.tar.gz
 echo
diff --git a/scripts/ci/in_container/run_generate_backport_readme.sh b/scripts/ci/in_container/run_prepare_backport_readme.sh
similarity index 100%
rename from scripts/ci/in_container/run_generate_backport_readme.sh
rename to scripts/ci/in_container/run_prepare_backport_readme.sh
diff --git a/scripts/ci/pre_commit_setup_cfg_file.sh b/scripts/ci/pre_commit_setup_cfg_file.sh
index 88ff838..f7a92ac 100755
--- a/scripts/ci/pre_commit_setup_cfg_file.sh
+++ b/scripts/ci/pre_commit_setup_cfg_file.sh
@@ -25,7 +25,7 @@ TMP_OUTPUT=$(mktemp)
 
 cd "${MY_DIR}/../../" || exit;
 
-find  "licenses" -type f -exec echo "  " {} \; | sort >>"${TMP_FILE}"
+find  "licenses" -type f -exec echo "  " {} \; | LC_ALL=C sort >>"${TMP_FILE}"
 
 SETUP_CFG_FILE="${MY_DIR}/../../setup.cfg"
 
diff --git a/setup.cfg b/setup.cfg
index fd14c16..9feeac7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -47,7 +47,8 @@ license_files =
 # End of licences generated automatically
 
 [bdist_wheel]
-universal=1
+python-tag=py3
+
 
 [files]
 packages = airflow