We can't predict what will or will not be working in Cataclysm. You'd be better off registering on an actual addon website and asking the authors of the mods themselves if they have plans to update for Cataclysm.
Any up to date solutions for attendance/loot tracking? (Headcount seems to be doomed towards cataclysm :S)
I'm looking for a non-DKP tracking/calendar/loot/invite system, but all I seem to find are pretty old solutions.