TFW2005 has posted four pictures (mostly blacked-out) whose silhouettes indicate what characters they could be. One of them (left) seem to verify that that Optimus Prime and Jetfire have a combined mode complete with wings, boosters and a large gun, must like what their Legends class counterparts indicated. The other key chains look to be Starscream, Megatron, and Bumblebee. That is two classes of Transformer 2 toys that show the combined mode which makes me wonder what other classes it will extend to and whether or not that mode is used in the movie.
