MacOS Sonoma is out, and I’ve installed it on my Mac.
When I first tried to launch Notenik, the app seemed to hang, and had to be force quit.
After that, though, I re-launched and it seemed to run just fine.
I did get a new notice asking for permission to access iCloud Drive, but I just said ok to that, and then sailed on.
So no significant problems so far.
If anyone else runs into any problems with the new macOS, I would appreciate your reporting them here.