A couple more things that occurred to me:
First, it looks a little light on model count for TOS. Maybe one unit and two champions? The big guy at the back looks too small to be a titan, but maybe he's just a second champion or special type of single model unit. Could there be more models not shown yet? Then again, the Malifaux starter set is only 4 models per side, so I suppose there is precedence for the starter set to be much smaller than needed for a full game.
Second, is that Kirai? May just be coincidence, but their is certainly a pretty strong resemblance to how she has been drawn/described, and the association with spirits. First Malifaux / TOS crossover model?
Makes me wonder who the Guild champion could be... Sonnia/Lady J/Ortegas all seem to be very Malifaux focussed, and I don't see McMourning or Nellie leading large numbers of troops. So Lucius (he *is* the most associated with the guild "army" - guards and the like), Hoffman (possible if it's largely constructs) or McCabe?