Paramount has confirmed that J.J. Abrams will sit in the director's chair, with Steven Spielberg producing on Super 8, the top-secret project revealed earlier this week (read our earlier article here). All that is known about the flick at this time is that it is inspired by the films that Abrams loved growing up (it is not a Cloverfield prequel, as previously rumored). The first teaser will be attached to Iron Man 2.
Abrams reinvigorated the Star Trek franchise last summer, and he's currently attached only as a producer on the sequel. Paramount has already pegged a June 29, 2012 release date for the next Trek installment.
As for Spielberg, he recently committed to directing War Horse.