One of the games announced last year during the E3 was State of Decay 2. Undead Labs has posted some interesting concept art however, there has been no gameplay or word of when we'll get to play the game. That said, it looks we'll find out soon enough, as according to the official Twitter account, the State of Decay 2 release date will be announced at E3 2017.
Just a couple of months before we find out then. The original State of Decay was a huge success, with millions of players. It'll certainly be interesting to see exactly how the sequel improves upon it and shakes things up. Hopefully we'll get some extensive gameplay at E3 as well as a release date.