Undead Labs, developer of the popular survival simulation State of Decay , announced that they had signed a contract with Microsoft to produce a series of exclusive titles over the course of several years. This probably means that the developer's next project, an MMO zombesco known internally as Class 4 , got the ok from the House of Redmond and probably there will be presented, with a definitive name, during the E3 2014. Zombie lovers and State of Decay can then sleep easy: we will see still Undead Labs, course on Xbox One.