The kidney grills shape may look the same but they are different. Notice the two pics, the prototype has 11 slats each as compared to the production which has nine. Just an observation.
Also the lips on the front air dams are not parallel like the M6's which I am surprised a bit. The front design lacks cohesiveness which is surprising for a /// design.
That's my 2c.
2007 E92 6MT - Silverstone II with Extended Black and /// Performance Exhaust and BPM Sport Tune
2011 F25 X3 3.0d