He says: "I do know for a fact that there is an Uncharted 4."
So i saw this link on some gaming forum.. Might be fake, because i never heard of this site. So take it with a grain of salt.
EDIT: Thread title is misspelled
The next Naughty Dog game is definitely not Savage Starlight, and might have nothing to do with space, at all. Our sources are still confident that the next major release is Uncharted 4.
Despite the recent talks about the upcoming space adventure from Naughty Dog, our contact is confident to confirm that the next game to be revealed by Naughty Dog is not Savage Starlight. Earlier last month our source confirmed to us Naughty Dog would definitely reveal their next game at the next Spike TV event, which we, of course, assumed would be the Video Game Awards of 2013 -- but we've all heard of another event upcoming on the 14th which is the the PlayStation 4 launch special event. Several industry professionals, including Geoff Keighly, have since suggested at a big announcement from Naughty Dog at a special announcement from Naughty Dog at either event.
When confronted, our source confidentially confirmed that the next the title of the next Naughty Dog game is not Savage Starlight. When we asked whether the next game will actually take place in space, he replied, "Naughty Dogs interest in space is very new to me. I would only assume that Naughty Dog's second team is looking for inspiration for their second project".