I really don't know about studio projects very far ahead of time and even when I do hear things who knows if it pans out.
I had heard about ARK2 before The Game Awards but was also told we were seeing new God of War demo and that I could bank on so who knows what happened there.
Thanks for the answer. It's just very strange. Many people leave, and this is, in theory, normal. But strange thoughts still creep in Although, Toyama hinted in one of the interviews that he left because Sony wants to focus on big games. So maybe Japan Studio will do big things instead of fading out. Thanks again for your answer