Manticore & Sister Psyche Resurrected

That picture of Statesman's faceplate, Manticore's bow, and BAB's gauntlets all busted up probably isn't a clue. It's more likely to be misdirection. Like a trailer for the next week's episode of "Lost" that takes a glimpse of a scene or line of dialog out of context to make it seem like there's going to be some huge revelation next week, but turns out to be nothing, that image will either turn out to be not representative of anything at all that happens in the new arc, or else shows something out of context in order to set up the surprise. I think if they were really going to kill off BAB or States or Manti, they wouldn't show a picture of their signature accessories all busted up. That's too heavy-handed and obvious to be foreshadowing. They want it to be a surprise, see? It won't be a surprise if they really are saying "Who Will Die? HINT: To Whom Do These Objects Belong?".

BTW, when I say "misdirection", I don't mean to say the devs are lying. Misdirection to set up a surprise ending is a good story-telling device.

Anyway, for that reason, I don't think it will be any of those three. My guess: it'll be Citadel, for reasons brought up by others in this thread.