The Art of Naughty Dog | Uncharted 4: A Thief’s End
"While one can never predict the future, we do know what our next project is going to be: Uncharted 4: A Thief’s End. We haven’t revealed a great deal about the game just yet, but in the following pages we are sharing some never-before-released pieces of concept art from Drake’s upcoming adventure. We’re not going to spoil it for you, but rest assured: he and his companions will be traveling the globe again discovering secrets lost to history—and you might even discover some secrets about Drake himself."
Source: http://ravenatorl.tumblr.com/post/98784010241/misstalwyn-the-art-of-naughty-dog-uncharted