Okay, so meanwhile (as of Oct-21) I got Windows 11 regularly through Windows Update. Seems to work without any issues so far.
Hi. The title says it all: Anyone got Windows 11 through Windows Update yet? I've read that the XPS 13 (9310) is supposed to be one the very first PCs to receive the regular update. I have installed every latest update from Windows and Dell. Cheers. 
Dell XPS 13 9310 - Windows 11 through Windows Update yet?