According to Sony's Shawn Layden, Spider-Man is swinging its way to the PS4 something in the first-half 2018.
“To be honest, we’re already halfway through 2017…And that’s the nature of game development. No, I feel the lineup we have coming into the holidays this year – and GT will launch in the fall – I don’t know if you got to go to the pre-show [hands on event for media]? Well GT was heavily represented there on the floor. We think there is a lot of attention around that title from our company. And the stuff coming in 2018, all of that is coming in the first half of the year.”
http://www.dualshockers.com/ps4-exclusive-spider-man-seemingly-confirmed-first-half-2018/