Isn't it the "Lords" of Shadow, hence more than ONE lord? I'd think, if Dracula IS in there, he's the Lord of the Lords of Shadow(the leader of all of them). It makes me wonder who all the others are.
As for other classical character appearances, yeah, Death and such are pretty much a given, though I don't doubt that Alucard might have some part in this new CV continuity. I mean, there's always a place for the "son of Dracula", especially considering how popular he is.