User blog comment:Mr. Mittens/Mystery Screenshot from Comic Con Identified?/@comment-4950455-20121004043930

With the new picture, the ship looks like an Alliance dreadnought, although the context (red color, Omega-like hologram nearby) implies it might actually be Cerberus. It's definitely not the Elbrus, unless it's undergone a serious comic-to-game transformation.

As for the person besides Shepard, it's still hard to tell, although I'm thinking salarian or quarian are the most likely possibilities.