3.15.0 schedule

The dates below use a 17-month development period that results in a 12-monthrelease cadence between feature versions, as defined byPEP 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

Expected:

• 3.15.0 alpha 3: Tuesday, 2025-12-16
• 3.15.0 alpha 4: Tuesday, 2026-01-13
• 3.15.0 alpha 5: Tuesday, 2026-02-10
• 3.15.0 alpha 6: Tuesday, 2026-03-10
• 3.15.0 alpha 7: 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 fortwo years.
• Around the time of the release of 3.17.0 final, the final 3.15 bugfix updatewill be released.
• After that, it is expected that security updates (source only) will bereleased for the next three years, until five years after the release of3.15.0 final, so until approximately October 2031.