As any genre fan or member of the press will tell you, Abrams and his Bad Robot crew go a tad overboard with trying to keep everything top secret on their projects.  At times it's worked perfectly (the surprise of "Star Trek") and other times its lead to disappointment (the unnecessary "Cloverfield" connection to "Super 8").   Disney and Lucasfilm generally aren't ones to reveal all their assets for a project early, but even on the last three "Star Wars" films Lucas released a good deal of behind-the-scenes footage, concept art and images (and online to help grow StarWars.com).  Will Abrams realize the "Star Wars" universe is a different beast? We'll believe it when we see it (and chances are you won't see much).