Naughty Dog recently announced that the release date of "Uncharted 4: A Thief's End" for the PS4 will be moved further until 2016. What are their reasons for the delay?

Game director and creator Bruce Straley and Neil Druckmann confirmed the delay on the PlayStation blog and claimed that they need to further improve on the graphics of the game.

The two visionaries claimed that the game has more into it than what was originally expected by their team.

"Since we showed you our first gameplay reveal of Uncharted 4: A Thief's End, more of the game and story have come together, and it's become clear to us that this game is much more ambitious than we originally envisioned," they said in the post.

"We've made the difficult choice of pushing the game's release date. Giving us a few extra months will make certain that Uncharted 4: A Thief's End not only meets the team's high standards but the high standards that gamers have come to expect from a Naughty Dog title."

This led fans and gamers to speculate what addition would they make on the PlayStation exclusive title.

Overall improvements have been pointed out by IB Times. Naughty Dog is trying to give fans the best possible gaming quality ever imagined, as the game will be seen on the PlayStation 4 for the first time.

Furthermore, with no exact release date set yet, Sony revealed that the release date of "Uncharted 4: A Thief's End" should be expected in spring next year.

"The team at Naughty Dog will be heads down working through 2015 making sure that Nathan Drake's story gets the closure it deserves. Come Spring 2016, you and Nate are in for one thrilling, emotional ride."