Check out the loose photo of the figure in this news update:
I can see universal-jointed shoulders and elbows, and hinged knees. I hope the hips are ball-jointed, they certainly COULD be, but they could be standards which wouldn't be as good. I can't tell if the torso is articulated at all because of the fire gimmick which I'm assuming is removable (after all, why make an articulated SBD who is always on fire?). The sculpt looks better too, the hands are the first thing I noticed, they're closed in instead of being flat open. This is definitely a step in the right direction.