ThatGameCompany have announced plans to release a hardcover book with the art from Journey.
"This book, designed and written by Matt Nava, art director on Journey, provides an insider's view into the stylistic influences, narrative functions, and game design goals that shaped the final look of the game. Readers will discover how Journey's landscapes, cut-scenes, and much-loved robed traveler came to be. For your enjoyment, The Art of Journey will come bound as an embossed hardcover book filled with gorgeous concept art, intricate pencil drawings, and 3D models printed in full color on art-quality paper."
The book also comes with a voucher to download the soundtrack of the game. No information on how to get a hold of the book on this side of the Atlantic, but you'll likely be able to order it online through the usual channels.