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Merged
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Jun 5, 2025
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Add initial changelog entries for 1.17 #19200

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Add initial changelog entries for 1.17
cdce8p Jun 1, 2025
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Minor improvements
cdce8p Jun 4, 2025
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Merge remote-tracking branch 'upstream/master' into changelog-1.17
cdce8p Jun 5, 2025
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21 changes: 21 additions & 0 deletions CHANGELOG.md
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## Next Release

### Remove Support for targeting Python 3.8

Mypy now requires `--python-version 3.9` or greater. Support for only Python 3.8 is
fully removed now. Given an unsupported version, mypy will default to the oldest
supported one, currently 3.9.

This change is necessary because typeshed stopped supporting Python 3.8 after it
reached its End of Life in October 2024.

Contributed by Marc Mueller
(PR [19157](https://github.com/python/mypy/pull/19157), PR [19162](https://github.com/python/mypy/pull/19162)).

### Initial Support for Python 3.14

Mypy is now tested on 3.14 and mypyc works with 3.14.0b3 and later.
Mypyc compiled wheels of mypy itself will be available for new versions after 3.14.0rc1 is released.

Note that not all new features might be supported just yet.

Contributed by Marc Mueller (PR [19164](https://github.com/python/mypy/pull/19164))

### Deprecated Flag: \--force-uppercase-builtins

Mypy only supports Python 3.9+. The \--force-uppercase-builtins flag is now deprecated and a no-op. It will be removed in a future version.
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