I would bet serious money they will. Murdy will reuse anything he possibly can to cut costs and save time. Being that this will be the biggest year in the event's history, with such a limited creative team, it only makes sense that Murdy and Chris would choose to do content they're more familiar with. That's why I'm not surprised to see Saw, The Thing, Evil Dead, and parts of Insidious return.
Oh, and think of how many props and sets they could reuse in the Blumhouse mash-up. They can reuse several house pieces for Insidious and Sinister and asylum walls in surgery tools from previous mazes for Get Out.