So the 3rd Final Fantasy Ultimania Volume just received an official release date for the English version of the book. Dark Horse will be publishing it and it will be coming out in April 2019. This Volume will be specifically about Final Fantasy X to XIV. It will feature over 300 pages of art, lore, creator commentary and more. It is currently available for preorder on Amazon and the descriptions boasts a very accurate and authentic translation from the Japanese source material. So this is definitely a must have for Final Fantasy fans.
Source: http://www.siliconera.com/2018/08/08/final-fantasy-ultimania-archive-vol-3-english-release-with-ffx-to-ffxiv-releases-april-2019/