News on the XBox 360 exclusive RPG by Square-Enix and Tri-Ace has been thin on the ground lately, but the game suddenly exploded onto the gaming news with a release date. The press release states that the RPG will be shipping in the US on the 2nd September 2008. However, the mention of a "simultaneous release" in the press release suggests that the game will be launched worldwide, including in Europe, on the same day (though it will likely be on the Friday of the same week - confirmed - Europe get this game on 5th September).
The RPG is dependant on the discoveries you make in the game. Any discovery made in the game will be immediately reflected in the game world and as a group of enemies are encountered, separate tactics are needed to dispatch them.
Source: Joystiq (stating global release), Kotaku (press release)