Translated from German, via Google Translator:
“Featuring over 500 artworks from Diablo, Diablo II, Diablo III and Diablo IV, this book features many noteworthy artworks created for the iconic action RPG of Blizzard Entertainment, which has given generations of fans everlasting nightmares.”
It doesn’t seem coincidence that the book is slated to launch on November 3. Less than 24 hours after the BlizzCon 2019 Opening panel. The image was shared by Nanoneo in the MMO-Champion forums.