User blog comment:B214/Question and Answers 6/@comment-67.70.246.208-20180923021235/@comment-2601:8C:601:5692:7518:8E45:8E53:ED93-20181003003454

Right now? Nowhere, unless you own the book yourself. It's barely been released and there's barely any spoilers, let alone a translator having a chance to pick it up yet. Besides the active DxD Universe translators are busy with other projects (such as Volume 25) at the moment.

Oh, and yes, the book includes the entirety of EX (including at least one additional chapter) based on the TOC.