User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-37870823-20181220081314/@comment-2601:8C:601:5692:9C52:DC9A:DC34:E917-20181220142526

The book has been released in Japan. The info comes, directly or indirectly, from spoilers given by those people capable of reading Japanese who have bought the book. There's no translation yet, so be patient.