The first screenshots of EA's new MMA game appear in Sports Illustrated this week (anybody got a sub?) but one screenshot has been posted on Facebook by EA Sports and is currently featured on videogame blog Kotaku. It shows Fedor arm-barring a character that I would guess is Randy Couture.
It doesn't appear dark enough to be Fedor's upcoming opponent, Brett "The Grim" Rogers, who confirms he was recently scanned for the game and will be appearing in it. You can find more discussion in this Fanshot that I didn't see before I posted this,