Paramount has released a new Star Trek Into Darkness featurette with lots of new footage plus director J.J. Abrams and stars Zachary Quinto, Zoe Saldana, and Chris Pine talking about the film. 
Other footage released to date includes the Super Bowl ad (see "Super Bowl Movie Ads") and trailers (see "New, Darker 'Star Trek' Trailer").
The film opens May 17th.