First reports of actual game play are making their way onto the web now. One thing I've read is that the game plays differently based on the character class you choose. If you choose to play as a CAST, for instance, you come across areas and bosses in a different order than as a Human.
It sounds kind of like PSIII, in terms of going to certain areas earlier or later depending on if you play as Ayn or Nial. Good idea or bad idea?