Yep. Even got a cool trailer when announced with Homer and Batman going portal hopping, among other things. But instead of posting that trailer, I'll post this:

Yes, a Lego Big Bang Theory set is due out this weekend. Because really, we don't have enough physicist minifigs, do we? On the bright side, if BBT can get a Lego set, there's still hope for a Lego Road Warrior set someday.

Wow. Not the best build there. But it shows I'm not the only idiot who wants this set.
Back to Dimensions though, there's one world on the LD page that hasn't been mentioned yet, that of Midway Games. That basically means a Mortal Kombat set (which I think Lego would frown on), a Gauntlet set, or a set with a certain yellow dot eating man... Or a Revolution X set with a little Steen Tyler minifig. But that last one strongly depends on someone at WB having a brain anuerysm and approving it.