Status: Announced for PS4, but probably won't even release before the PS5 is out
Blizzard has confirmed that Diablo 4 is in development for the PS4, but it's very, very likely that it'll end up being a PS5 title. The dungeon crawler currently has no set release window, and with the PS5 launching in late 2020, we reckon this return trip to hell is going to be a cross-gen excursion.
Status: Unannounced, but not impossible
With the PS5 confirmed to be backwards compatible, Media Molecule may not feel it needs to port Dreams to the next-gen console at all. However, it will surely want the creation engine to span multiple generations, and a native port to the PS5 could allow for even more imaginative potential to be unlocked. It's guesswork, but not unrealistic.
Status: Announced for PS5 and PS4
Perhaps the first example of a confirmed PS5 game, Dying Light 2 from Techland is confirmed to be a cross-generation title. The open world zombie survival game will shuffle its way onto both PS4 and PS5.
Status: Announced with no platforms specified, but strongly hinted to be a next-gen title
The Elder Scrolls VI is years off, and that means it's almost certainly going to be a PS5 game. Publisher Bethesda has made a habit of announcing its games relatively close to their release dates, but with this one, its hand was somewhat forced at E3 2018 due to swirling speculation and the fact that it had to keep fans happy after talking at length about mobile titles.
Status: Announced for PS4, but also in development for PS5
Square Enix has outright admitted that Final Fantasy VII Remake will release on the PS5, after boss of the Japanese publisher Yosuke Matsuda revealed that the anticipated RPG is being developed for both generations of PlayStation hardware. It makes sense when you consider that the story is being split into chapters, and the PS4 will be a bit long in the tooth by the time the second instalment arrives.