User blog comment:Blood Reaper/Todd Howard Hinting at Future DLC's and Patches/@comment-67.234.62.46-20120302193843/@comment-67.234.62.46-20120304032138

though if there are new perk trees, wouldn't that potentially mean that there are new skill classes to level up, therefore unlocking more perks? or possibly make it so that you gain perks as you feed and use your vampire/lycan abilities. Would also be interesting if they made a perk-buy back thing, where you could choose to remove already selected perks and use them for something else. More or less wishful thinking at this point though XD.