I'm calling it right now.
Savage Starlight will be the SP DLC for TLOU.
The story will be an enhanced version of the brief descriptions on the backs of the comics you find throughout the game.
I can actually see this as a possibility now.
Hmm... Justin Bieber sig bet?
I was thinking that dude. But Neil said the DLC will reveal more about the characters and the world, so obviously then it wouldn't be Savage Starlight. There has to be something important about it though.They wouldn't put that much effort into random comics thrown about the game and make a website for nothing. It is not the SP DLC though.