Spoilers!:
Apparently old Galvatron is meant to be Cyclonus, so I guess that Rodimus Prime (since they cant use Hot Rod) may very well be coming up against a team of Predacons. This ties into both rumours of Episode 30, as well as a special multiple episode story written by Forward and Di Tillio (Beast Wars writers).
And Prime is a rank in the Animated series, for someone who has finished (although it seems that they did not have to actually graduate) from the Autobot Military Academy with honours.
Don't know if the overall Autobot commander gets a prefix of "Ultra", or given the title "Magnus", or are called by their own name or what, its one of the things I'd like to know.
Looking For: Wreckers Saga TPB Collection (with Requiem)