Kingdoms of Amalur will feature "5 distinct regions, 4 playable races, and 3 class trees with 22 abilities per tree." The player starts off as a "blank slate," waking up in a pile of corpses after returning from the dead. The game will utilize a unique "destiny" system, whereby the player can invest in a skill-tree system to unlock various "destinies," which acts as the class system for the game. Combat works based on the timing of button presses, with occasional quicktime events like those in the God of War series.
Source: Wikipedia, "http://en.wikipedia.org/wiki/Kingdoms_of_Amalur:_Reckoning," available under the CC-BY-SA License.