Vampires and werewolves have yet to be confirmed yet. Is that okay with you?
you are misunderstanding the OP.
Vampires and werewolves have not been confirmed as "gone," which is what the OP is talking about. Things that are either confirmed to be omitted or so unrealistic as to be almost certainly not included in Skyrim.
I think werewolves are probably less likely but, we have actually seen http://3.bp.blogspot.com/_4lrm97dBqNo/TUFlxQiW7CI/AAAAAAAAAZM/n_xn6TWnSA8/s1600/artofskyrim_013_femmonster.jpg?__sf=1303445029, and vampirism has been part of almost every TES game, so Vampirism is most likely in.