Python 3.14.5 release candidate

Python 3.14.5rc1 is a release candidate for the fifth maintenance release of Python 3.14, containing ~113 bugfixes, build improvements, and documentation changes. The most notable change is the reversion of the incremental garbage collector (introduced in 3.14.0–3.14.4) back to the generational GC from Python 3.13, due to reports of significant memory pressure in production environments. The final 3.14.5 release is planned for 2026-05-08. The post also summarizes major Python 3.14 features including free-threaded Python support (PEP 779), deferred annotation evaluation (PEP 649), t-strings (PEP 750), multiple interpreters in stdlib (PEP 734), Zstandard compression support, an experimental JIT compiler, and a new Windows install manager.