Naughty Dog like to leave little hints around in their world for gamers to speculate about, and the last time this happened, a date left in a bar in Uncharted 3 turned out to be the release date for the Last of Us.

Gamers have now found a calendar in the Last of Us with the date October 2013 written on it. Whilst this could have just been a randomly chosen date for art and immersion purposes, it could be possible that the date on the calendar is hinting towards an October 2013 release for Naughty Dog's next game, Uncharted 4.

Uncharted 4 would sit nicely on the PlayStation 4 right ahead of the release date of the console, and if the game is released in October, perhaps this could mean the PS4 could be released before or around the October 2013 date as well.

There is no way of really knowing what the meaning is behind the Calendar, but a lot of gamers are convinced that the October 2013 date in the Last of Us is more than just artwork. What are your opinions?