Updates for 3.7 feature code freeze

Author: ned-deily

devcycle.rst

@@ -110,9 +110,11 @@ security patches have been applied to the branch.
 Summary
 -------
 
-There are 5 open branches right now in the Git repository:
+There are 6 open branches right now in the Git repository:
 
 - the ``master`` branch accepts features and bugs fixes for the future
+  3.8.0 feature release (RM: Łukasz Langa)
+- the ``3.7`` branch accepts bug, regression, and doc fixes for the upcoming
   3.7.0 feature release (RM: Ned Deily)
 - the ``3.6`` branch accepts bug fixes for future 3.6.x maintenance releases
   (RM: Ned Deily)

index.rst

@@ -91,7 +91,9 @@ Status of Python branches
 +------------------+--------------+-------------+----------------+----------------+----------------------------------------------------------------------------+
 | Branch           | Schedule     | Status      | First release  | End-of-life    | Comment                                                                    |
 +==================+==============+=============+================+================+============================================================================+
-| master           | :pep:`537`   | features    | *2018-06-15*   | *2023-06-15*   | The master branch is currently the future version Python 3.7.              |
+| master           | :pep:`569`   | features    | *2019-10-20*   | *2024-10*      | The master branch is currently the future Python 3.8.                      |
++------------------+--------------+-------------+----------------+----------------+----------------------------------------------------------------------------+
+| 3.7              | :pep:`537`   | prerelease  | *2018-06-15*   | *2023-06*      | Fixes for features, bugs, and docs in the upcoming 3.7.0 release           |
 +------------------+--------------+-------------+----------------+----------------+----------------------------------------------------------------------------+
 | 3.6              | :pep:`494`   | bugfix      | 2016-12-23     | *2021-12-23*   | `Most recent binary release: Python 3.6.4                                  |
 |                  |              |             |                |                | <https://www.python.org/downloads/release/python-364/>`_                   |
@@ -117,6 +119,8 @@ Status:
 
 :features: new features are only added to the master branch, this branch
     accepts any kind of change.
+:prerelease: feature fixes, bugfixes and security fixes are accepted for the
+    upcoming feature release.
 :bugfix: bugfixes and security fixes are accepted, new binaries are still
     released.
 :security: only security fixes are accepted and no more binaries are released,