Well it's fun to speculate, but what do we have so far.
* a mysterious cat, that gets allot of camera time.
* a dwarf that mentions a cup/goblet/chalice that o Dimm wanted (which now appears on the promo T-shirts the Reds are wearing)
* big claws (more than likely belonging to some sort of vampire)
* the Devils pit
* a quest with a woman and child that makes no scence (other than Beauclair being mentioned in the journal entries) along with a stone medallion as a reward. It's still marked as an item needed to complete a quest in your inventory (speculation has it that there is one alternate ending to B&W that requires that players did something in the main game, could this be tied to that?
I am kinda thinking that some people theories about B&W possibly using the Devils pit as a starting point is correct. As it looks like someplace where blood rituals have taken place and the antogonist packed up and moved to Toussant.