2014 BMW M3 rendered
With BMW already testing the next generation 3-Series, people have already started speculating on its M3 version. It will be unveiled in 2014 as a coupe and convertible only, with a potential touring version currently under discussion.
Codenamed the F32, the 2014 M3 will feature a more aggressive design with exterior lines inspired by the CS Concept.
Right now BMW’s hottest 3-Series car is propelled by a 4.0-liter 414hp V8 engine, but when the next generation 3-Series comes in 2012, don’t expect the engines to get above six cylinders. It is rumored that BMW will use a 3.0-liter twin-turbo straight six producing around 450-hp. Also with the next M3 BMW will focus on reducing the car’s weight. So add that to a greater output and you will get an high performance car with a better fuel economy than the current M3, or as BMW’s M Group CEO, Ludwig Willisch said "a more compact engine that could be butted up against the firewall."
Source: BMW Blog