Remember, it was a quite a long time ago, Dark Sector was the first Xbox 360 title ever announced. Back then it was a futuristic action/stealth game with a very interesting graphics style. Well the developers of Digital Extremes definitely changed their idea of the game, like you'll be able to see for yourself with this very nice teaser trailer. As far as I can tell, this is all realtime.
Update: Added 8 images.