I don't know exactly what was in the Free Comic Book Day version, but in the back of this one there was a "Spider-man Manifesto" by Tom Brevoort, written during the planning stage of BND. Also a section that says who all the characters are and what's going on with them, including a few things that I don't think have happened yet in the series. It also had some pencil drawings from the story, and on the last page a letter from Wacker.
I really enjoyed reading the Spider-man Manifesto. It basically outlined what elements should be in the Spider-man stories and what needed to be changed. I agreed with most everything in there and I'm glad they're taking Spider-man in this direction.