Well, after a couple of years SOE Austin has come out clean about it's first and foremost project called DC Universe Online, which is supposed to give you the ability to interact and affect the DC Universe as being able to play as a supehero or supervillian, and be able to join "Leagues" or "Legions" depending on your side.
I found some videos on youtube that might be able to give some insight on what's going on.
Concept Art
Gameplay Trailer
[href=http://www.youtube.com/watch?v=DRb8TGeNuFU]"Making Of" Documentary with some insight on mechanics and such
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Might be interesting how it plays out. MMOPBAG is not the official genre but it's been known to be a Massively Multiplayer Online Physics-Based Action Game since it uses the Unreal Engine 3.
Game Development....the possibilities