I'm really optimistic, except for a few things.
I'm really happy with Arcee being included in this one - just hope the colours and robot mode match the original design as much as possible.
I love the idea of Jetfire (if they keep him Jetfire - could be another placeholder name) as the SR-71 Blackbird.
I love the fact that the surviving TFs haven't changed (I'm fine with the minor alterations to Bumblebee)
Ice cream truck transformers is a great idea (I'm just pissed they'll end up reformating into the Trax and the Beat... it's a waste of a great concept just to get some new flashy cars in there)
That new silver concept car (Corvette maybe?) is wicked.
Can't wait to see more, I'm totally drooling over the spy photos from this movie!