Python 3.14's first release candidate, 3.14.0rc1, has been announced, with the codebase now locked for stability. This means only reviewed bug fixes will be integrated and the application binary interface (ABI) is frozen. A second release candidate, 3.14.0rc2, is scheduled for 26 August 2025, allowing for final testing before the public launch of Python 3.14.0 on 7 October 2025. The development team encourages third-party project maintainers to publish compatible wheels and begin testing before the upgrade process begins.
The release candidate phase for Python 3.14 has begun with version 3.14.0rc1, locking down the codebase and only allowing reviewed bug fixes to ensure stability.
The application binary interface (ABI) is frozen for the 3.14 series, guaranteeing that binary wheels compiled against this release candidate will be compatible with the final version.
A second release candidate, 3.14.0rc2, is set for 26 August 2025, marking the last chance for widespread testing before the official release on 7 October 2025.
The Python development team encourages third-party Python project maintainers to begin compatibility testing and publish 3.14 compatible wheels to support smooth upgrades.
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