http://www.gamespot.com/articles/uncharted-4-single-player-is-1080p30fps-photo-mode/1100-6428583/
But the multiplayer will run at 60 FPS however.
As suspected, Uncharted 4: A Thief's End's single-player mode will not run at 60fps.
During a Q&A session today following an extended gameplay demo, Naughty Dog developers confirmed that, after much deliberation, it was decided that the campaign will run in 1080p at a locked 30fps.
But the multiplayer will run at 60 FPS however.