Ned Deily added the comment:
That is working as designed because a particular release version of the Python
docset contains the What's New documents of previous versions. So when you use
the version switcher to move from 3.8 to 3.9, you are now looking at the 3.8
What's New in the 3.9 docse
New submission from Dong-hee Na :
1. open https://docs.python.org/3.8/whatsnew/3.8.html
2. choose dev (3.9)
3. 3.9 whats news should be shown but still showing 3.8
--
assignee: docs@python
components: Documentation
messages: 356006
nosy: corona10, docs@python
priority: normal
severity: