My experience. Two days ago, I upgraded KUbuntu from 23.10 to 24.04 LTS on my R&D box. It just worked. After a couple of days of using it, nothing found that was a problem or non-functional. As usual, upgrades now are just ho-hum, works the same as previous version. Eventually I'll probably run into something under the hood that is different, but the computer drives the same, looks the same ... I like it that way, actually -- no surprises!

I'll leave my other laptops/desktops/server running KUbuntu 22.04 LTS in the meantime. Let the dust settle on 24.04.

As a quick follow up, still no fallout from the upgrade. Usually by now I'd have something that needs sorting out, but not this time.