| Feature | PEP / Tracker | Current Status (June 2024) | Expected Impact | |---------|---------------|----------------------------|-----------------| | | https://peps.python.org/pep-0646/ (PEP 646 – Variadic Generics) | Accepted, implementation in progress for 3.13 | Better typing for match / case . | | Exception Groups & except* | PEP 654 (already merged in 3.11) | Ongoing refinements (e.g., improved traceback formatting) | More ergonomic async error handling. | | Fine‑grained typing improvements | PEP 695 – Type Parameter Syntax (target 3.13) | Draft; core team reviewing | Simplifies generic class definitions. | | Self‑type ( typing.Self ) | PEP 673 (merged in 3.11) | Continued integration, docs updates | Cleaner class methods return types. | | Tomllib (TOML parser) | PEP 680 – Standard library TOML support (merged in 3.11) | Performance tweaks, strictness options for 3.13 | Faster config handling for many tools. | | Better error messages for import failures | https://bugs.python.org/issue44716 | Prototype in 3.13 beta | Less cryptic tracebacks, especially for circular imports. | | Zero‑Cost await for async generators | PEP 703 – async generators performance | Experimental in 3.13 dev branch | Lower overhead for async pipelines. | | CPython bytecode cache format ( .pyc ) version 4 | Internal tracking | Draft for 3.14 | Enables future optimisations without breaking existing caches. | | Subinterpreters improvements | Issue #42271 (PEP‑554) | Ongoing, but still experimental | More robust multi‑runtime isolation (useful for sandboxing). | | zipapp enhancements | Issue #45388 | Minor, planned for 3.14 | Ability to embed resources directly in zipapps. | | asyncio.TaskGroup API polishing | PEP 654 – already in 3.11, but refinements continue | Minor tweaks in 3.13 | More ergonomic task‑group handling. | | New statistics functions | Issue #46230 | Two new median‑related helpers slated for 3.13 | Simpler statistical workflows. |
To place November 28 in perspective with the core language lifecycle: python release november 28 2025
: Discussions around PEP 803 reached a peak in late November, focusing on maintaining a stable binary interface for the new "No-GIL" (free-threaded) versions of Python. 14 that were current as of that date? Pre-PEP: Rust for CPython - Page 10 - Python Discussions | Feature | PEP / Tracker | Current
: Support officially ended on October 31, 2025 , meaning by November 28, users were being strongly urged to migrate to newer versions to avoid security risks. Notable Technical Discussions in November 2025 | | Self‑type ( typing