From the post:
Only 1000 copies worldwide and exclusive to games-workshop.com. This stunning 96 page Limited Edition army book possesses features that will resonate with the heart of every avid Dwarf fan.
Presented as an ancient Dwarf tome, it's reminiscent of the famous Book of Grudges. The sturdy double folding grey cover is secured by hidden magnets and decorated with embossed knotwork and the runes for stone, fire, iron and gromril.