2015-10-31 14:33 GMT+02:00 Timothy Murphy <gayleard@eircom.net>:
I am running Fedora-23beta.
What action exactly do I need to take when Fedora-23 comes out,
hopefully next Tuesday?

You should need to do nothing. At most you should check that status of updates-testing repository is what you want.  
--
Kari Koskinen