Don't think we have seen a white coupe before
Edit: Here is an video of a 228i most likely
More on BMW 2 Series @
http://www.bimmerpost.com/2-series/
And info / spy pics compilation @
http://www.2addicts.com/forums/showthread.php?t=790056
From Autogespot.com
Here's what the white M235i looks like under the camouflage (exterior and interior):