Namco Bandai is bundling extra goodies with Project X Zone. The game will be sold as a limited edition with a mini-art book, poster, and music CD packaged with the game. Project X Zone will still retail for $39.99.
This sounds pretty much like the Japanese release which came in a slightly larger box to accommodate the Crossover Sound Track CD and art book called the Appearance Work Guidebook.
Project X Zone comes out on June 25 in North America and Latin America.