Dark Horse is set to release a comprehensive new The Legend of Zelda encyclopedia next year. It should go nicely with the Hyrule Hystoria books that came out a few years ago.
As revealed on the Dark Horse website, this new encyclopedia is 320 pages full of info from the original LOZ up until The Legend of Zelda to Twilight Princess HD. It pretty much covers over 30 years of gaming history.
* An exhaustive compendium of everything from the first 30 years of The Legend of Zelda.
* An extensive database of items and enemies.
The encyclopedia will be released on April 24, 2018 for a price of $39.99. You can pre-order it now via Dark Horse, Amazon or where other books are sold.