The folks at Undead Labs realize that it is the support of everyone that purchased State of Decay and spread the word about the title that made the difference. Big stuff is coming to State of Decay, but the developers can’t say more than that right now.
As for the future, the developers have nothing to announce right now, but will have an announcement at some point in the future. They would like to build some prototypes and before they have anything additional to add.
Read more at Undead Labs here.