Python 3.13.1 - Release Nov 2025 Extra Quality

For teams that skipped 3.13.0, November 2025 is the right time to begin testing 3.13.1 in staging environments. Expect Python 3.13.2 in February 2026 with further refinements to the free-threading runtime.

: You can now create frozen dataclasses using the frozen parameter. python 3.13.1 release nov 2025

iOS and Android were officially promoted to Tier 3 supported platforms, expanding Python’s reach into mobile app development. Maintenance and Bugfixes (Late 2025) For teams that skipped 3