Just in case anyone isn't aware, since it sounds like some people think Naughty Dog is a single team studio, they actually run with two full teams. The studio was split after Uncharted 2 with one team working on a sequel while the other team worked on a new IP that ended up being The Last of Us. The team that did Uncharted 3 has been working on the next game since shortly after they finished their last project. Unless you want to believe that the team which did Uncharted 3 took a vacation of one year or longer.
A Naughty Dog team has never taken longer than three and a half years to release a game after their last project. That game was The Last of Us which was a new IP that was started right after the studio split in two and it was delayed. It's not like this is a new IP. They've been working on this franchise for quite a few years now. It being on a new platform hardly matters considering who we're talking about. A studio that released a new IP on a new platform within two years of its last project for three generations in a row (Crash Bandicoot, Jak & Daxter, Uncharted).
So if you're wondering why anyone would believe that Uncharted 4 is coming within three years after the last Uncharted game and not even being bothered that The Last of Us launched last summer, that's why.







