IIRC, when I upgraded from 22 to 22.1, XPlayer, which I rather liked, disappeared from the repos (I’ve gotten used to using Celluloid at this point, but I’m getting old and don’t deal well with changes). I should probably know this by now as a Mint user, but where can I see what’s available when I upgrade so I know if I’m going to lose anything?
Yes, that makes sense. Unfortunately, as far as I know, Mint doesn’t provide a list of obsolete or deprecated packages. Even the upstream Ubuntu release notes (https://discourse.ubuntu.com/t/ubuntu-24-04-lts-noble-numbat-release-notes/39890 for 24.04 / LM 22) don’t list removed packages.
What you can do after the upgrade is query for obsolete packages on your system using
apt list ?obsolete. It’s generally recommended to remove those.