I'm kinda even wondering if they even plan on going over the events of Curse of Darkness. I wouldn't be surprised if they just retcon it altogether.
The only part of CoD that I’m expecting is a somewhat early return of Dracula, only to be snuffed out again for another hundred years. I doubt the Devil Forgemasters would be potential new bodies for him, but you never know. I’m hoping Death/Zead has something to do with it, but I dunno, end of Season 3 made it seem like all you had to do was snatch him out of the Infinite Corridore, but we’ll see.
Isaac seeking vengeance for Dracula is at least following CoD. I’ll be keeping an eye out to see if Isaac kills Lenore and if so, if it would cause Hector to have a moment of vengeance on him. It’d be pretty sick if that happens, but some people can get quite attached to their abusers, and who knows what kind of effect the spell she put on him might have.
I’m also expecting Alucard to decide to get that long nap in after all, ha.