How do we know thatIt was part of Jason's reporting:
Quote
Instead, one team at the studio was assigned to help Naughty Dog with a multiplayer game while a second group was assigned to work on a new Uncharted game with supervision from Naughty Dog. Some staff, including top leads, were unhappy with this arrangement and left. Bend's developers feared they might be absorbed into Naughty Dog, and the studio's leadership asked to be taken off the Uncharted project. They got their wish last month and are now working on a new game of their own that will be part of a brand new franchise.So the one game is likely very early in production.
They might have an Uncharted game that's further along though
No I don't know if that game is still in development. It was all on paper at Bend
— Jason Schreier (@jasonschreier) April 9, 2021