Capcom has said that Dead Rising 2: Case Zero will be released on 31st August and exclusively on Xbox Live.
This will cost 400 Microsoft Points (£3.40/€4.80).
Case Zero serves as a prologue to Dead Rising 2, introducing main character Chuck Greene and some new gameplay elements. You'll pick-up the story two years after Dead Rising 1 and three years before Dead Rising 2, and find Chuck and daughter Katey trapped in the zombie-infested town of Still Creek.
You'll be able to duct tape weapons and objects together, just like in Dead Rising 2, and any "player levels", "prestige points" and "combo cards" earned will carry over into the full game.
Dead Rising 2 will be released on 1st October for Xbox 360 as well as PC and PS3.