We silently skipped releasing in December (it was too close to the
holidays, a lot of people were away) so by date you may have been
expecting alpha 4, but instead it’s alpha 3:

This is an early developer preview of Python 3.13

Major new features of the 3.13 series, compared to 3.12

Python 3.13 is still in development. This release, 3.13.0a3, is the third of six planned alpha releases.

Alpha releases are intended to make it easier to …

alpha developer features holidays major new features people python python 3 series