The first full-length trailer explains more of the story of Neill Blomkamp's alien-intolerance film District 9, showing off the alien's new weapon that can pluck rockets out of the sky. But there's more, including alien bug babies and power suits.
So apparently the aliens have invented a spray that turns jumpy MNU agents into "one of us" — delightful. Also, there are little baby bug aliens, and now we know how they are spawned. Plus secret underground space ships that the aliens are most likely using to get the hell off this godforsaken rock.