Bumblebee's Camaro mode is obviously different in ROTF, is he just a modified version of the 2010 Camaro (The one on the roads right now) Or is he some weird future release? I'm sorry if this has been answered before!
But he's a concept again? I've seen the 2010 Camaro driving around, why would they make a concept so soon?
It's the 2012 Camaro Z/28 model that is in ROTF, in TF1 it is the Camaro SS, which is a package that can be bought now.
As far as I could tell he just has a different bumper then he did before in the first film. I suppose that would make him a custom Camaro. But he's still the same model.