I had a problem with 11.1 not upgrading so did what was recommended elsewhere in these forums: delete it from Apps and download again from the App store. Today there's an update to 11.2 and let the system try to update as before. Downloads the 7.6GB file, tries to update, and then exits stating it can't be upgraded and to try later.
Would someone at Apple care to have a look?
Currently running macOS Catalina 10.15.
Finally able to get XCode 11.2 installed after updating the Mac to Catalina 10.15.1.
Just came back to let everybody know but I see a lot of you already got it working! Thank you to all who replied, those confirming the problem (we could have started out own XCode 11.2 Anonymous group!) and those who posted that it's now working as it should for most after upgrading Catailna.