The Last of Us has been out for a few months and people that bought the $20 Season Pass have yet to see one part of the three promised DLC packs, until now. October 15th will see the release of The Abandoned Territories Map Pack with four new maps including: Suburbs, Bus Depot, Hometown and Bookstore.
Naughty Dog has not forgotten about the single player DLC that was announced as part of the Season Pass. The good news is that they are hard at work on it, the bad news is that it will not be ready until December or possibly early 2014. The main reason I bought the Season Pass was for this and while the wait may be long, I have faith that Naughty Dog will make it worth it.
The third piece of the Season Pass will another multiplayer pack and will not be available until the first half of next year.