One big thing I'm curious about is whether Abrams and Mindel will be shooting some scenes in IMAX like on the last Star Trek movie. Brad Bird and Claudio Miranda are shooting some of Tomorrowland (also from Disney) in the format, just as Bird did with Robert Elswit on Ghost Protocol. I wanna say there was a story about JJ "wanting to," but no confirmation.
A Star Wars movie with scenes in native 15/70 is pretty much the only thing that would get me to see it anywhere other than the Uptown.