Kingdom Hearts -2.5 HD ReMIX- will be releasing on October 2, 2014 in Japan. Alongside the game, Square Enix Japan will be releasing the “Kingdom Hearts Series Memorial Ultimania” book, which contains concept artwork, explained story details, guides – it covers almost everything about the series before Kingdom Hearts III. The sadness is that the book won’t likely be localized for the West, since the Ultimania books never make overseas. Anyway, if you are planning to import the book, the pricing has been changing between 28-50 dollars / 22-39 euros depending on the retailer.
Here are a few samples from the book: