It's no surprise BMW is jumping in the four-door coupe game. These pictures show an elongated coupe clearly based on the new 6-series. This variant is possible through BMW's flexible architecture, as the 6 Gran Coupe will share its components with the current 5, 5 GT, 6 and 7 ranges.
Based on the current lineup, we'd expect this to be strictly a four-seater, with several inches more rear legroom. Engine choices should mirror those of the 6- and 7-series models within given markets. No word yet on market arrival, but it could debut this fall at the Frankfurt Motor Show and arrive in the market next year as a 20123 model.