REL: prepare release of version 0.12

[theroggy]

List of (open) PR's planned for inclusion: https://github.com/geopandas/pyogrio/milestone/9

Extra things to be considered, or items that need a further push to get them included:

• GDAL 3.11 in wheel: BLD/RLS: update wheels to include GDAL 3.11 #578
• Improve Datetime support: ENH: improve support for datetime columns #486
• Drop Python 3.9: MAINT: minimum python version required to 3.10 #557
  • end of live: oktober 2025: https://devguide.python.org/versions/
  • MAINT: minimum python version required to 3.10 #557
• Add Python 3.14 support
  • official release on 7 october 2025
  • BLD/RLS: build wheels for Python 3.14 #579
• Drop support for some older GDAL versions, e.g. < GDAL 3.6 (when reading using arrow was introduced)
  • MAINT: drop support for GDAL < 3.6 #584

Things probably better kept for 0.13 timing-wise?

• Drop manylinux2014: as it is still building fine, keep it for now. If it gives issues: drop.

[brendan-ward]

We might want to consider dropping manylinux2014 relatively soon too, though we may want to do that in the next release as part of dropping Python 3.9, older GDAL, etc.

[EwoutH]

What's the exact plan/timeline on Python 3.14 support?

[theroggy]

What's the exact plan/timeline on Python 3.14 support?

Support has been added in #579, so with the release of 0.12, normally one of the coming weeks, support should be there...

[EwoutH]

Awesome, thanks for the update!

Python 3.14 stable release is now in just over a week (2025-10-07), would a release be possible before then? Could also be a patch release (with a backport).

[EwoutH]

Tomorrow Python 3.14 is released! Could Python 3.14 wheels be uploaded to PyPI? Either:

• Release 0.12.0
• Backport and release 0.11.2
• Build wheels for 0.11.1 and upload to PyPI manually