Originally planned to be announced at PAX, an Amazon listing gave the game away. That Dark Horse Comics and Nintendo, together, would publish The Legend Of Zelda – Hyrule Historia, a 272 page hardcover volume that tells the whole history of Link, Zelda, and Hyrule, both fictional and in reality. With an introduction by Shigeru Miyamoto, it also includes a new Zelda manga by Akira Himekawa.
It is already the best-selling book on Amazon. Fifty Shades Of Grey can go swivel (something it might rather enjoy).