In lieu of the recent event:
PS4/5 exclusives/timed exclusives:
Babylon Fall
Re Fantasy
Project Awakening
Deathloop
Ghostwire Tokyo
Project Athia
FF16
PS5 is getting more third party exclusives/timed exclusives than PS4 and they are nearly all Japanese. In a recent interview Jim Ryan, CEO of Playstation, highlighted that they are investing a lot into Japanese third party relations, specifically with Square Enix, Capcom and Tecmo Koei. This lines up with the Nioh director (team Ninja) saying they have a PS5 game in the works, most likely exclusive like Nioh.
This is in addition to PS's incredibly strong 1st party lineup in the first year:
Sackboy
Demons Souls
Spiderman: MM
Ratchet and Clank
Returnal
Gran Turismo 7
Horizon: Forbidden West
God of War: Ragnorak