Ah that’s bad. I eventually managed to try out Wayland in the 24.04 live session, and it doesn’t support my touch/pen-screen: "“Unsupported platform detected. Currently only X11 is supported”. So I hope future versions will still offer X11 where Wayland can’t work yet. Otherwise the situation becomes like for Windows, that a new OS version means you have to update hardware too…

Indeed that worked, thank you!. It was good to try; turns out Wayland doesn’t support my touch/pen-screen, so I’ll keep X11.

lack of global hotkeys in Wayland, graphics tablet support issues, OBS not supporting embedded browser windows, Japanese and other foreign as well as onscreen keyboard support issues that are somehow worse than on X11, no support for overscanning monitors or multiple mouse cursors, no multi-monitor fullscreen option, regressions with accessibility, inability of applications to set their (previously saved) window position, no real automation alternative for xdotool, lacking BSD support and worse input latency with gaming.

All things that don’t matter to modern users.