They're currently going through certification, but they mentioned that Sony requested more time to allow for pre orders and they said no, so it won't be up for pre order on PSN. The fact that Sony is discussing pre orders should be a good sign that certification is almost finished.
They define Early 2017 as Jan - April, Mid 2017 as May - August, and Late 2017 as September - December.
Also worth mentioning that physical copies won't be available at launch for those that pre ordered, but they'll be sending them a digital code at no extra cost and then ship out said physical copies when available.
Oh, for those that backed or pre ordered the XB1 version, there was an update on code distribution.
They've also added a few features since the beta. Namely throwing knives for Jason, traps he can set, and breakable fences to stop looping, and the Stalk ability which temporarily mutes the music to allow you to sneak up on counselors.