Good on DH for releasing supplementary materials like this. I wonder why they never did the same for the Illustrations Guide? I guess it helps that the printing format of the guidebook is the same as the manga, whereas artbooks are a different beast entirely...
Either way, this means we'll get an official translation of the huge Miura interview, which is awesome. Having the rest of the guidebook translated, well, it's kind of hard to get excited for it, since I already own the Japanese one.