That is a great question - we’ve had users test out Shotgun web on Catalina with no issues to note at this time. Unofficially, Create seems to be functioning well, but has not been through any official QA review. RV has been ok, but struggled with some permissions. I’m just following up with our Toolkit team to see if they have anything to report.
I have updates: Autodesk is taking December to ensure that Catalina is functional with all it’s tools before confirming that it’s safe to upgrade to. I think by January, we should be ok to move forward.