It's the Cyberton version. I saw a pic of it recently.
There is a card out for a Costco Prime/Wing Saber 2 pack to be released at Costco, but no toy to go with it, thus no indication whether its from Energon or Cybertron. At 35 bucks, I'm willing to bet its the Energon versions. Maybe that Santa Prime will see the light of day after all.
I don't think it'll be permanent. In fact, I doubt we'll notice much of a hiatus. With the movie coming, I imagine Alternators will become that much more important in the betweenie years (assuming there's some warrant for a sequel).
Alternators to go on hiatus after 2 more entries, I'm thinking "Mirage" and "Rumble" are what they meant, and the hiatus I bet will turn permanent.