User blog comment:G0LD3NF1RE/The Elder Scrolls at E3 2012/@comment-72.0.245.142-20120607142151/@comment-4118895-20120607220337

No they are not adding more levels. The perk trees will be based on how many "feedings" you do. If you a werewolf you have to eat a certain amount of people to gain one perk of your choosing. Same goes with the vampire