http://www.auto-motor-und-sport.de/n...2823_14194.hbs here some pictures of the new engine.
They state it will actually weigh 16 kg ~ 35 lbs less than the old R6 engine in the E46 M3. It's fantastic, I can't believe it. BMW engineered an engine far better than the RS4 engine... The only thing left is to learn about the fuel consumption.
Best regards,
CSL