@eoli3n Versions are impossible to give because they keep changing, so we do try to have the version that are supported between masters/dev-branch/etc… for the os’s at that point in time (and backward)
Debian Based (Mint, Ubuntu, Debian), Redhat Based (Redhat, Rocky, Alma, Fedora).
The versions, dev-branch is more likely going to be in line with latest/greatest. Some what of a delay of course, but there’s no list that clearly spells out what version of specific OS is supported.
In my opinion, Redhat based OS’s are the best as we don’t have to continually update the installer code to support future versions. Most will just work right out of the box.
Migration process? No, if you’re moving one machine to another that’s one thing of a migration and there is a process for that, but if you’re meaning “I’m on bookworm and without moving anything, I’m going to do an in place upgrade?” I don’t believe there will be problems but what I would suggest is re-installing FOG once the upgrade is complete as any services or config files that got changed would need to be rebuilt for the new OS. It’s not hard and I don’t think there will be any issues. If there are, please let us know.