Spielberg's being stingy with the footage. He's said as much in interviews. He still wants as little of this film to be seen beforehand as possible.Surely there must be other clips they can put in trailers? I think there's only maybe about two shots in that one we haven't seen before.
Well that's fine, but why bother making all these trailers if it's just to put what we've already seen in slightly different orders?