However, understanding the full release timeline is important, as the "final" release was preceded by several beta and release candidate versions. The Python development team follows a strict, calendar-based release schedule. For Python 3.9, the process spanned nearly a year and a half.
Here is the detailed information regarding the release date of Python 3.9. Python 3.9 was released on October 5, 2020. python 3.9 release date