The headline feature of 2025 is the gradual removal of the Global Interpreter Lock (GIL). Initially released in Python 3.13 as an experimental build, the November 2024 update of CPython 3.14 makes --disable-gil a fully supported configuration for single-threaded processes.
For developers and operations teams, the November–December 2025 CPython releases offer several practical takeaways: cpython release november 2025 new
If you are currently running Python 3.13 or the October 3.14.0 release, follow this migration path. The headline feature of 2025 is the gradual