BMW released today the first teaser video that announces the arrival of the new generation 2014 M3 sedan and the M4 coupe. Both, the 2014 BMW M3 and the BMW M4 are scheduled for debut at the 2014 North American International Auto Show (NAIAS) in Detroit in January. According to our sources, the 2014 M3 and the M4 are going to be powered by a 3.0-liter 6-cylinder engine with TwinPower Turbo technology that develops 430 hp and around 500 Nm of torque.