The presence Palpatine felt
One of the recent canon novels (can't remember which) addressed that Palpatine felt a presence beyind the borders of the Empire, something he believed to be the origin of the Dark Side itself (or something along those lines.) I've heard theories ranging from it being Snoke, to it being a potentially canonized version of Vitiate, I've even heard a theory about it being a new canon version of Abeloth. But what do you all think? I realize there's not much to go on, but it's fun to spit-ball ideas sometimes.