A clearer photo of that Omega DLC preview image
has surfaced. Looks like a hologram of an Earth cruiser (presumably that Cerberus one from the Invasion comic) with what looks like the tail end of Omega up in the top right corner. What's really interesting of course is that shadowy figure behind Shepard. A new race perhaps? A Quarian with eccentric fashion sense? A Turian female? Aria in Prince of Persia cosplay?!