It's been obvious from day one that it was possible, but after a couple of years of oh-so-painful 30 FPS recording on the EOS 5D Mark II, Canon is finally coming through with its long-promised 2.0.3 update that brings 29.97 FPS and 24 FPS (23.976, to be precise) 1080p recording at last.
In three years on the website, Mark Feary says he has received any number of "Uh oh" emails, usually telling him that the KOM he'd recently obtained had been reclaimed by its previous holder.