Vane is an open-world adventure game, and it’s being developed by Friend & Foe, which consist of former The Last Guardian, Battlefield, and Killzone developers.
Here’s a trailer for it which was shown at TGS:
This is the description of the game, provided by Friend & Foe:
A child with an odd ability stuck in a strange land. A dangerous natural environment inhabited by a strange civilization. Vane is an open-world adventure game based on mystery and exploration.
According to the studio, it’s releasing on “PC and every other platform we can get our hands on".
It’s a strange consortium of developers working on this. It resembles Rain and Journey, aesthetically.