The experimental "no-GIL" build from Python 3.13 is now an officially supported variant. This allows CPU-bound Python threads to run in true parallel on multi-core systems, though it currently requires a specialized installer or build flag.
Python 3.14, nicknamed "Pi" due to its version number, is now the stable standard. This release introduced several landmark features that developers are beginning to integrate this November:
Type annotations are now evaluated lazily by default. This change significantly reduces startup overhead and removes the need for from __future__ import annotations to handle forward references.
The concurrent.interpreters module is now in the standard library, enabling isolated execution environments within a single process. This offers a new concurrency model that bypasses Global Interpreter Lock (GIL) contention without the overhead of separate processes.
November 2025 marks a pivotal moment for the CPython ecosystem, defined by the early-stage adoption of the newly released and the beginning of the Python 3.15 development cycle . Following the final release of Python 3.14 on October 7, 2025 , the community has transitioned into a month of intensive benchmarking, library updates, and tooling enhancements. The Arrival of Python 3.14 (Final)
A new compression.zstd module brings built-in support for the high-performance Zstandard compression algorithm. Python 3.15: The Alpha Phase Begins What's new in Python 3.14 — Python 3.14.4 documentation
The experimental "no-GIL" build from Python 3.13 is now an officially supported variant. This allows CPU-bound Python threads to run in true parallel on multi-core systems, though it currently requires a specialized installer or build flag.
Python 3.14, nicknamed "Pi" due to its version number, is now the stable standard. This release introduced several landmark features that developers are beginning to integrate this November: cpython release november 2025 new
Type annotations are now evaluated lazily by default. This change significantly reduces startup overhead and removes the need for from __future__ import annotations to handle forward references. The experimental "no-GIL" build from Python 3
The concurrent.interpreters module is now in the standard library, enabling isolated execution environments within a single process. This offers a new concurrency model that bypasses Global Interpreter Lock (GIL) contention without the overhead of separate processes. This offers a new concurrency model that bypasses
November 2025 marks a pivotal moment for the CPython ecosystem, defined by the early-stage adoption of the newly released and the beginning of the Python 3.15 development cycle . Following the final release of Python 3.14 on October 7, 2025 , the community has transitioned into a month of intensive benchmarking, library updates, and tooling enhancements. The Arrival of Python 3.14 (Final)
A new compression.zstd module brings built-in support for the high-performance Zstandard compression algorithm. Python 3.15: The Alpha Phase Begins What's new in Python 3.14 — Python 3.14.4 documentation
