We've scored a two-page interview with Obsidian Entertainment's Kevin Saunders, in which the Neverwinter Nights 2: Mask of the Betrayer lead designer reveals some preliminary information about the newly announced expansion pack.
GB: Are there any plans to introduce any new prestige classes or sub-races? How about epic levels?
Kevin: Absolutely! We are adding new prestige classes (and a base class) and new sub-races. We'll be sharing more information on those soon, but we think you'll be excited about our choices. ;) One of the prestige classes is completely new and was designed through consultation with our colleagues at Wizards of the Coast. As far as the leveling goes, NX1 will feature epic levels through level 30.