Cpython Release November 2025 New Jun 2026

Previously experimental, the free-threaded build (disabling the Global Interpreter Lock or GIL) is now officially supported in 3.14. While still a separate executable, it is no longer considered "experimental," signaling a major step toward true multi-core parallelism in CPython.

Following its October release, Python 3.14 entered its peak adoption phase in November 2025. Key highlights of this version include: cpython release november 2025 new