The F80 M3 sedan is coming together visually bit by bit with each new sighting of the development mules, and it's looking sportier by the spotting.
...Although still covered in a cloth covering, the shapes and lines of the M3 front bumper are now easily seen and there's no mistaking its M6 like design (see the comparison photo below). The middle bumper intake is a trapezoid shape like on the M5/M6, although more aggressively angled. This is flanked by two huge air intakes on each side, which are shaped and angle up aggressively like the M6. There may also be a bit of the 1M bumper style thrown in - at the outer edges of the bumper's side air intakes where air curtain vents appear to be.
With the loss of the heavy front end camouflage, we also see for the first time what may be air curtain vents on the sides of the lower front bumper and side intakes. With recent models, BMW has incorporated air curtain technology into front apron designs to optimize aerodynamics (see the 1M, 1 Series LCI, and 7 Series LCI). The air curtain vent reduces drag by forcing the air to flow more aerodynamically around the front wheels. As mentioned above, the area where the air curtain vents appear to be located resemble the 1M bumper styling...