The new generation 1-Series from BMW is supposed to be revealed in January 2011 at the Detroit Auto Show. There is however very less probability of a car remaining secret that long in the automotive industry. An image of the car has been revealed on the internet. The 1-series would be launched in both coupe and the convertible model and that is exactly what the picture also reveals. More details for sure would be out soon.
The future M Version of the car is also going to be based on the 1-Series. So it is best that one learns more about this car before getting interested in the future M version. BMW is expected to keep the 1-Series and the future M version nearly same as far as their looks and interior are concerned. There would be changes in all probability only in the engine performance to cater for better fuel efficiency.
Source: topspeed