Dude on Gametrailers is talking about how comedy is "gone." Then he went onto say the comedy comes from how the player plays it, whatever that means.
Co-op is in.
edit: I don't think that's a bad thing. I mean, different isn't bad. State of Decay is serious and is supposed to be great. But that B-movie tone, the psychos, etc. are a big reason why I liked the last two and this comes off more plain than those.