Python 3.14-rc3 is out today as the final test preview ahead of next month's official Python 3.14 stable release.

Python 3.14 is gearing up for its official release on 7 October. Python 3.14 brings many great changes including the free-threaded Python being officially supported, multiple interpreters in the standard library, Zstd compression module, deferring the evaluation of annotations, a zero-overhead external debugger for CPython, an improved C API for configuring Python, improved error messages, [1]a new opt-in interpreter , and a new command line interface for inspecting running Python processes using async tasks.

Python 3.14 is a very healthy feature upgrade for this popular programming language. Within my recent [2]Fedora 43 beta benchmarks are [3]Python 3.14 vs. 3.13 benchmarks given the Fedora Linux releases. There are some nice incremental performance improvements to find with Python 3.14.

Downloads and more details on today's third release candidate of Python 3.14 via [4]the Python Insider blog .



[1] https://www.phoronix.com/news/Python-3.14-Alpha-5

[2] https://www.phoronix.com/review/fedora-43-beta

[3] https://www.phoronix.com/review/fedora-43-beta/4

[4] https://pythoninsider.blogspot.com/2025/09/python-3140rc3-is-go.html