Before its September 15th release, Mages will put out a demo for Dunamis15 on Xbox Live and PlayStation Network. Gold members on Live will get to play it first, on September 8th. Silver account members will get to play it on the 15th.
PlayStation Network users will have access to the demo on September 13th. The demo will be a digest version of the game, letting you play chapters 1 through 5.