Actually, only PS5 exclusive thats we know about is Godfall. And its not a platform seller. What we know is that all Sony firstparty studios released/releasing thier games in 2017-2020 and there isnt enough time for great AAA game to make from scratch for 9 generation console. Most likely, there will be new Gran Turismo and new God of War games heavily based on previous instalments and, actually, there isnt any reason of not releasing those on 8 gen consoles(at least on Pro). My bet is that Sony will drop PS4, but not Pro.