GOD OF WAR: “early 2018”. Though GoW games have always released in March. Oh, and the Game length is checking out at 25-35 hours.
DETROIT: Spring 2018, so approximately April-June.
SPIDER-MAN: First half of 2018. I think Sony would want to release this while there was still a lot of hype over Avengers: Infinity War, which releases 5/4/18. So i would suspect either May or June (nless it gets delayed).
DAYS GONE: Only window given was 2018, to my knowledge. Shu said the game is playable from beginning to end, and that Bend is now only working on polishing the game.
DREAMS: Only window given was 2018. It will also have a beta.