Looking at PS4 line up, around this time this year for major release, for January we had Dragon Quest Builders and Yakuza Kiwami, both multiplatform games and one where PS4 version didn't sold the most, nothing for February and Dark Souls III for march, that being the first major PS4 game not to be cross gen further in the year Pawafuru 2016 still didn't had a release date nor did Dragon Quest Heroes II, though both were planned for Spring/Early Summer, both multiplatform too.
Without release dates later in the year there was Tales of Berseria, Persona 5, Final Fantasy XV and Yakuza 6, as well as faint hope for Dragon Quest XI as the January anniversary stream hadn't happened yet.
This year we have a Kingdom Hearts collection a Danganrompa game that will sell more on Vita and Resident Evil 7, February has a Super Robot Wars that will sell more on Vita on the long run and Koei Tecmo's take on Dark Souls (which doesn't seem to be picking much interest in Japan) and for march there's Horizon coming the same week as the Switch, nothing major planned for the rest of spring.
For the rest of the year there's Dragon Quest XI and most likely a new Yakuza, new games will probably indeed be announced but as major games is concerned that's about it for PS4 in 2017.