Along with humanoid faces, I've noticed [in the trailer] that the TRANSFORMERS' bodies also move much like as if they were made of muscles, and bones . . . especially if you pay attention to Ironhide's arm [not when he smashes the aluminum stepladder leading into the pool, but when he uses it {his arm} to assist, and proppell his body up, and out of the pool - the second, or third shot of him I believe].
I think that some people will be surprised [either pleasantly, or unpleasantly], when they see the TFs' move on the screen for the first time, and they won't move like robots at all [stiff, and heavy], but rather like elegant, giant beings.