Pretty hard to refute info from the most authoritative source on the matter.
Everything else is speculative folklore.
Mine: 2006 Z4 M Roadster | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12
Hers: 2011 335is Coupe | Le Mans Blue | Black Dakota Leather | Dark Glacier Aluminum | 6MT | ED 5/12/11
Also Mine: (On Order) 2016 M4 | Sakhir Orange | Black Full Merino | CF Trim | DCT | More | ED 5/13/16