There are speculations going around, but neither Sony nor Square Enix has yet denied or confirmed anything about them. The hero of these speculations is Voice of Cards: The Isle Dragon Roars, a game that has not been announced yet.
Although almost nothing is known about the game so far, according to a rumor on Reddit, it is thought that Nier: Automata and Drakengard director and writer Yoko Taro can be found in the game. It has been confirmed that Taro has been working on a brand new game with Square Enix a while ago.
It is known that in June 2021 Square Enix’s trademark “Voice of Cards” and “The Isle Dragon Roars” was acquired. This points to the coming of announcements for the new game gradually.
More information will perhaps appear at Gamescom 2021.