I finally updated my last machine from openSUSE 12.3 to 13.1 (in the usual way), and with that one I had a bit more fun than the other few times I’ve done this by now.
First mysql refused to start, then quite a few services that were enabled on 12.3 decided to be disabled on 13.1, but nothing during the update “told me so”… but now all seems to work fine.