> Additonally, unlike "changelog", "What's New" only shows difference between 3.5 and 3.6.  It won't be updated to describe changes between 3.6.0 and 3.6.1.

That's not always true.  There are occasionally changes made in the What's New document for maintenance releases.  See, for example, https://docs.python.org/3.5/whatsnew/3.5.html.  You'll find references to 3.5.1 and 3.5.2 there.

If it's truly bothering people, a better solution is to just remove the release and date directives.  They aren't there for earlier releases.  We can live without them.