While we are still doing and asking for tests I've written a draft release announcement 4.0, see here:
and see it also attached as a RST file. The releases are not available yet at pypi.python.org but if you do:
or use the "-i" option with PIP you can use the instructions from the draft announcement verbatim.
Maybe someone is still left who hasn't tried upgrading and could test the draft release announcement? I'll also happily receive patches for the attached RST source file.