Marcus and Dom are peeking over the wall dividing games and books, according to an online retailer dug up by VH1's games blogger Harold Goldberg.
The book - just "Gears of War 1" for now - is reportedly 352 pages courtesy of Steven Kent, a former games journalist.
Kent's previously written for a variety of mainstream US publications including the Seattle Times and Chicago Tribune, has penned books on the making of games, and last year released a pair of science-fiction novels - his current passion.
And if a comment on the VH1 blog from a certain "Steven Kent" is legitimate, then it looks like it's on. "Damn it Goldberg," he writes, "how do you even find this stuff!"
Speaking of finds, a quick squizz round the Epic Games forum reveals a number of burgeoning fan-fics for followers of the enigmatic Gears duo. Sons of Sera is our favourite.
Currently there's no word from either Microsoft or Epic Games on the Kent book's validity.