I just saw the movie yesterday. For some reason it seemed like in some of the outside panning shots into and around the bridge window (and other exterior areas) I got the feeling that they may have tried to visually reduce the size of the Enterprise by about 10-15%. Just seemed a little smaller to me overall.
Also, did anyone notice a change in the design of the ship at the end of the movie?
I'm sure there's more, but I'll probably have to wait for the disc to find them.