PEP: 537
Title: Python 3.7 Release Schedule
Author: Ned Deily <nad@python.org>
Status: Final
Type: Informational
Topic: Release
Created: 23-Dec-2016
Python-Version: 3.7


Abstract
========

This document describes the development and release schedule for
Python 3.7.  The schedule primarily concerns itself with PEP-sized
items.


Release Manager and Crew
========================

- 3.7 Release Manager: Ned Deily
- Windows installers: Steve Dower
- Mac installers: Ned Deily
- Documentation: Julien Palard


3.7 Lifespan
============

3.7 will receive `bugfix updates <https://devguide.python.org/devcycle/#maintenance-branches>`_
approximately every 3 months for about 24 months. Sometime after the release of
3.8.0 final, a final 3.7 bugfix update will be released.
After that, it is expected that
`security updates <https://devguide.python.org/devcycle/#security-branches>`_
(source only) will be released as needed until 5 years after
the release of 3.7 final, so until approximately 2023-06.

As of 2023-06-27, 3.7 has reached the
`end-of-life phase <https://devguide.python.org/devcycle/#end-of-life-branches>`_
of its release cycle. 3.7.17 was the final security release. The code base for
3.7 is now frozen and no further updates will be provided nor issues of any
kind will be accepted on the bug tracker.


Release Schedule
================

3.7.0 schedule
--------------

- 3.7 development begins: 2016-09-12
- 3.7.0 alpha 1: 2017-09-19
- 3.7.0 alpha 2: 2017-10-17
- 3.7.0 alpha 3: 2017-12-05
- 3.7.0 alpha 4: 2018-01-09
- 3.7.0 beta 1: 2018-01-31
  (No new features beyond this point.)
- 3.7.0 beta 2: 2018-02-27
- 3.7.0 beta 3: 2018-03-29
- 3.7.0 beta 4: 2018-05-02
- 3.7.0 beta 5: 2018-05-30
- 3.7.0 candidate 1: 2018-06-12
- 3.7.0 final: 2018-06-27

3.7.1 schedule (first bugfix release)
-------------------------------------

- 3.7.1 candidate 1: 2018-09-26
- 3.7.1 candidate 2: 2018-10-13
- 3.7.1 final: 2018-10-20

3.7.2 schedule
--------------

- 3.7.2 candidate 1: 2018-12-11
- 3.7.2 final: 2018-12-24

3.7.3 schedule
--------------

- 3.7.3 candidate 1: 2019-03-12
- 3.7.3 final: 2019-03-25

3.7.4 schedule
--------------

- 3.7.4 candidate 1: 2019-06-18
- 3.7.4 candidate 2: 2019-07-02
- 3.7.4 final: 2019-07-08

3.7.5 schedule
--------------

- 3.7.5 candidate 1: 2019-10-02
- 3.7.5 final: 2019-10-15

3.7.6 schedule
--------------

- 3.7.6 candidate 1: 2019-12-11
- 3.7.6 final: 2019-12-18

3.7.7 schedule
--------------

- 3.7.7 candidate 1: 2020-03-04
- 3.7.7 final: 2020-03-10

3.7.8 schedule (last bugfix release)
------------------------------------

Last planned release of binaries

- 3.7.8 candidate 1: 2020-06-15
- 3.7.8 final: 2020-06-27

3.7.9 schedule (security/binary release)
----------------------------------------

Security fixes plus updated binary installers
to address 3.7.8 issues; no further binary
releases are planned.

- 3.7.9 final: 2020-08-17

3.7.10 schedule
---------------

- 3.7.10 final: 2021-02-15

3.7.11 schedule
---------------

- 3.7.11 final: 2021-06-28

3.7.12 schedule
---------------

- 3.7.12 final: 2021-09-04

3.7.13 schedule
---------------

- 3.7.13 final: 2022-03-16

3.7.14 schedule
---------------

- 3.7.14 final: 2022-09-06

3.7.15 schedule
---------------

- 3.7.15 final: 2022-10-11

3.7.16 schedule
---------------

- 3.7.16 final: 2022-12-06

3.7.17 schedule (last security-only release)
--------------------------------------------

- 3.7.17 final: 2023-06-06


Features for 3.7
================

Implemented PEPs for 3.7 (as of 3.7.0 beta 1):

* :pep:`538`, Coercing the legacy C locale to a UTF-8 based locale
* :pep:`539`, A New C-API for Thread-Local Storage in CPython
* :pep:`540`, ``UTF-8`` mode
* :pep:`552`, Deterministic ``pyc``
* :pep:`553`, Built-in breakpoint()
* :pep:`557`, Data Classes
* :pep:`560`, Core support for typing module and generic types
* :pep:`562`, Module ``__getattr__`` and ``__dir__``
* :pep:`563`, Postponed Evaluation of Annotations
* :pep:`564`, Time functions with nanosecond resolution
* :pep:`565`, Show DeprecationWarning in __main__
* :pep:`567`, Context Variables

Copyright
=========

This document has been placed in the public domain.
