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PEP 790 – Python 3.15 Release Schedule | peps.python.org

Author:
Hugo van Kemenade
Status:
Active
Type:
Informational
Topic:
Release
Created:
26-Apr-2025
Python-Version:
3.15
Table of Contents

Abstract

This document describes the development and release schedule for Python 3.15.

Release manager and crew

  • 3.15 release manager: Hugo van Kemenade
  • Windows installers: Steve Dower
  • Mac installers: Ned Deily
  • Documentation: Julien Palard

Release schedule

3.15.0 schedule

The dates below use a 17-month development period that results in a 12-month release cadence between feature versions, as defined by PEP 602.

Actual:

  • 3.15 development begins: Wednesday, 2025-05-07
  • 3.15.0 alpha 1: Tuesday, 2025-10-14
  • 3.15.0 alpha 2: Wednesday, 2025-11-19
  • 3.15.0 alpha 3: Tuesday, 2025-12-16
  • 3.15.0 alpha 4: Tuesday, 2026-01-13
  • 3.15.0 alpha 5: Wednesday, 2026-01-14
  • 3.15.0 alpha 6: Wednesday, 2026-02-11

Expected:

  • 3.15.0 alpha 7: Tuesday, 2026-03-10
  • 3.15.0 alpha 8: Tuesday, 2026-04-07
  • 3.15.0 beta 1: Tuesday, 2026-05-05 (No new features beyond this point.)
  • 3.15.0 beta 2: Tuesday, 2026-05-26
  • 3.15.0 beta 3: Tuesday, 2026-06-16
  • 3.15.0 beta 4: Tuesday, 2026-07-14
  • 3.15.0 candidate 1: Tuesday, 2026-07-28
  • 3.15.0 candidate 2: Tuesday, 2026-09-01
  • 3.15.0 final: Thursday, 2026-10-01

Subsequent bugfix releases every two months.

3.15 lifespan

  • Python 3.15 will receive bugfix updates approximately every second month for two years.
  • Around the time of the release of 3.17.0 final, the final 3.15 bugfix update will be released.
  • After that, it is expected that security updates (source only) will be released for the next three years, until five years after the release of 3.15.0 final, so until approximately October 2031.