It's not clear if the Demon War expansion pack is included, but it's certainly worth mentioning that Soldak Entertainment's action RPG Din's Curse is now available on Steam for $9.99 (and only $8.99 for the first week). That makes it the second title from the indie developer to get Steamed, as Depths of Peril has been available for some time already.
Does that mean that we'll also see Kivi's Underworld and Drox Operative on Valve's service? I hope so.