Since new logins have be disabled for a while now, it would be nice to see the new forum up and running. Of course I want them to make sure all my registered stuff migrates first! So, for now, Facebook seems to be the optimal resource for new users that don't already have a cakewalk forum login. Point your friends new to Cakewalk to facebook for now, I guess.
The one they'll want is the one Bob Bergen is the moderator of: the "Cakewalk/Sonar User Group (C/SUG)" - and is very active. There is a Cakewalk by Bandlab User group too - there's not much going on for that page that I can tell. There is also the Cakewalk Software page, but they don't seem to update their page very often, either.