I'm accounting for the hope that Cliffjumper will be back, making it 6 eventually.I get why the premise states there are only 6 Autobots but it's obvious from Prime's lifted and reedited movie speech that other 'Bots are out there.
Optimus said there are only 5 Autobots left on Earth (that he's aware of, at least) but that others may remain elsewhere in the cosmos. (Not necessarily in the Cosmos, however.)
Prime, Bee, Ratchet, Arcee, Bulkhead and then a returned Cliffjumper.
October for the toyline.
Obviously they want/need the shelf space for TF3 movie figs. I wonder if the Generations line will run parallel during the summer and continue. Is it possible we might have 3 lines of toys out by October '11? The TF3 line, Generations and Prime.