They literally said they won't talk about the game without Sony's permission, it's an exclusive.Everybody seems to think this is Demon's Souls, but I wouldn't be so sure, and I will tell you why.
In a job listing, Bluepoint Games mentioned they would be working on the most advanced home consoles, as in plural. If this statement is true, then their game is not exclusive to the PS5 and would likely be on Xbox Scarlett as well. Demon's Souls is owned by Sony.
Now there is an off chance that they could be referring to the PS4 and PS5, but the PS4 by that point would not be the "most advanced console".
With that said, I would be more than happy with Demon's Souls as I never finished the original after I bought it on launch day. One of the only games i regret not finishing.