The game you've all been waiting for. State of Decay is an open-world zombie-survival game, developed at Undead Labs and produced for Xbox 360 (via Xbox LIVE Arcade) and PC. State of Decay (formally codenamed as Class3) is a third person zombie-survival/action game developed by Undead Labs and published by Microsoft Studios. The end of the world has come, and players must explore an apocalyptic landscape while fending off hoards of zombies. The XBLA version of the game haas been released on June 5th, and a PC version will follow afterwards. The environment is an open-world that evolves over time, generating varying content depending on player actions. Players can set up a fortified safe area, form raiding parties, create supply chains, and collect resources.
Basically changes your 3 main characters slightly. Choosing from each. Marcus with Armor, and Maya with a mohawk, for example. See the full description for a link to the main dev post, including all details and developments. (Click "read more..." to see the full description)
For more information, and any questions, see the main dev post here on the Undead Labs forums: Forums.undeadlabs.com