User blog comment:Spawny0908/UPDATE!!!!: The Free DLC pack is coming in...../@comment-107.5.143.219-20110902005924/@comment-3455248-20110902052732

Unclear at this time whether everyone gets the Stronghold maps or only those with Liars and Cheats (seems like it would be everyone, though). In any case, the Stronghold maps are the big surprise here and they're probably what I'll check out first.