GitHub Actions is dropping Intel macOS by November.
(Cirrus dropped it in Dec 2022, CircleCI in June 2024, Travis CI dropped all(!) macOS in April, and Anaconda last week.)
CPython has dropped it to tier 2. What does this mean to you? Not too much; we still support it, produce installers, CI failures block releases.
It means we only test on buildbots and failures must be fixed/reverted within 24h rather than immediately.
https://discuss.python.org/t/dropping-intel-mac-to-tier-2/102100