Board Thread:Online Discussion/@comment-207.144.99.5-20130411130127/@comment-8267436-20130416131445

Check out this video.

http://www.youtube.com/watch?v=YlEipFtHw7o

At about 5:05, Paul Sage mentions Perks, and that "you'll be able to pick ones that allow you to become a werewolf or a vampire". Note that this is a early video, so some things might change come release.

As for the forms of Lycanthrophy (lore-wise), check out this page:

http://elderscrolls.wikia.com/wiki/Lycanthropy