The admonition that maybe you know what belongs here probably doesn't belong in the release notes, so I removed the following language:
This section has not been updated for Fedora 25 by the beat writer (http://fedoraproject.org/wiki/Docs/Beats#Beat_Assignments). If you have some ideas or knowledge of what should be in this part of the release notes, you are encouraged to edit the wiki directly. Read https://fedoraproject.org/wiki/Docs/Beats/HowTo for more information, then get an account and start writing.
I did, however, leave in the admonition that you should check for yourself. For Postgres it looks like a blind update from 9 should be no problem (but I didn't try it myself). The MySQL upgrade looks a little scarier.
Although there are other databases in Fedora, I don't believe there are any servers.