http://www.apple.com/trailers/paramount/11808/hd/
An on the ground perspective is a wise decision. Could be incredibly intense if: the technology is used properly and sparringly; if the characters are properly developed and not dumb; and if the enemy is completely believable, intimidating and full of surprises.
This, along with Will Smith's "last man on earth" movie, are at the moment the only "Blockbuster" movies I'm looking forward to.