Amazon revealed earlier this month.
A press release today from EA officially detailed the upcoming not-a-video-game, which noted that McNab won't be writing it alone, as co-author Peter Grimsdale will be assisting in the call of duty. McNab will be heading up consulting duties by himself, of course.
Billed as a pseudo-prequel to the events of BF3, "The Russian" follows ... Russian special forces soldier Dmitri "Dima" Mayakovsky and apparently explains his "back-story." Confusingly, the release also notes that "the book picks up where the game leaves off, allowing McNab and Grimsdale to give a thrilling new perspective into Dima's own personal quest as well as the events of Battlefield 3." If you're a "personal quest" kinda person, then perhaps this strange piece of cross-marketing will be for you when it arrives alongside the game in October.