I'm kind of surprised we haven't seen this one before. It seems a rather natural fit for both the system and the universe. The OP Games and Games Workshop have announced that they're teaming up to bring us Warhammer 40k Risk. Conquer the galaxy in all new ways.
From the post:
The chance to combine the quintessential strategy board game with the far future of the 41st millennium has finally arrived, and countless hours of enjoyment for fans of both of these world-renowned properties await. Dominate your opponents in battles set during the War of Beasts across Vigilus and control the far future this fall with RISK: Warhammer 40,000!
The latest product of The Op’s continuing partnership with Games Workshop, which brought another classic to dark science-fantasy fans with MONOPOLY: Warhammer 40,000, this meticulously detailed version of Risk is also based in the dark regions of space and set in the coveted territory nestled between the two halves of the Imperium. Vigilus is at the mercy of five warring Factions: Ultramarines, Orks, Chaos Space Marines, Aeldari Craftworlds, and Genestealer Cults, each represented by tokens for their Leaders and custom game pieces for their single and triple-threat units.