Well since Jens said we could make posts when some news came up, and it certainly has...
This looks to me like the closest we've seen so far of the monster, turned away walking down the alleyway to the left. Looks pretty engorged, has a pipe sticking out of it's arm, and is that a body is dragging?
Yeah, it definitely is (or was) carrying a corpse of sorts. A rather mutilated one at that.
But now I'm almost certain that this guy is the one from the first teaser, the one you can see hobbling in between the crates. The skin is almost identical and they both have that pipe contraption.