hugovk, In 2019-2021, here's how long it took CI services to support the newest Python release:
2019: Python 3.8
🥇 21 hours: Travis CI
🥈 20 days: @github Actions
🥉 24 days: Azure Pipelines
4️⃣ 25 days: AppVeyor2020: Python 3.9
🥇 17 hours: @github Actions ⬆️
🥈 20 days: Travis CI ⬇️
🥉 21 days: AppVeyor ⬆️
4️⃣ 22 days: Azure Pipelines ⬇️2021: Python 3.10
🥇 12 hours: @github Actions ↔️
🥈 17 days: Azure Pipelines ⬆️
🥉 28 days: AppVeyor ↔️
4️⃣ 106 days: Travis CI ⬇️