Thanks, I dug out a usb-c to display port cable from my stash. This connection makes it choose 2560x1440x60Hz, not bad.
Somewhat I expected the update to Noble in June, either it got delayed or I misinterpreted something.
For me the desktop works good enough so far. Indeed some native UT apps don't accept mouse scroll, but it's ok to just click and drag the scrollbar.
I haven't experienced any launcher issues. When disconnecting the monitor it takes about 1-2 min to make the phone react. Sometimes it asks if I'd prefer to reconnect or potentially loose unsaved data from apps listed on the popup. The only launcher issue I have is with waydroid apps showing up in the drawer. I would prefer this to show only one icon to start android, the android apps should be managed only by android launcher.
So overall it looks very promising. If only I could find a dock which would let me connect everything via one cable.