PSNow! claims to have a close source, and has unveiled the first details of the new IP of Guerrilla Games, which Herman Hurst announced a few months ago.
We'll see if E3 is the moment to announce the right place to make it official.
In order to keep it as accurate as possible, the original source says: New details of the new IP based in a fantastic universe.
And this could well be the new IP Guerrilla Games has been developing for months.