In the world of The Last of Us, September 26 marks the day the cordyceps fungus hit critical mass: it is known as Outbreak Day. Since 2013, Naughty Dog has used Outbreak Day as a way to celebrate our incredible community by releasing new and exclusive items, content, and special promotions. Scroll down and check out our biggest release of content so far to commemorate the 5th anniversary of Outbreak Day!
New screenshot
Also confirmation that there will be a PSN theme and avatars coming on the 26th. There are four other things that'll be revealed on the 26th
http://www.thelastofus.playstation.com/outbreakday