New hidden abilities?

In particular the alola forms all have new primary/secondary abilities. In particular muk who has poison touch as his primary ability where in gen 1 it was its hidden ability. Muk used to have stench as its primary ability but the bio text states that alola muk doesn't stink. This made me think about the new abilities we might see. I have no idea what abilities it might have but it's something else to look forward to.