The Division: New York Collapse is a guidebook that'll be released on the same day as the game. It's been described by Ubisoft as a guide that's written with accounts from before the game's events. I guess you can uncover game secrets by reading it, which probably means it'll reveal locations or coordinates... That will probably find their way online fairly quickly, unfortunately. Are you going to be picking this up? It's kind of a cool addition to the game.