Re: Uniform Differences
It might just be part of the movie poster art. The whole promotion so far has focused on the delta shield. I doubt that the actors actually will have little delta shields in their eyes in the film -- that's just part of the artwork. So too could be the delta pattern on the uniforms here to give them some texture. I am not convinced that's the actually fabric pattern in the film.
"STAR TREK is... Action - Adventure - Science Fiction."
-- Gene Roddenberry, 1964, top of the first page of his original pitch and outline for Star Trek