From the latest issue of Autoweek:
Look for the convertible to get sportier front styling when it debuts about a year after the coupe, which bows at the Geneva motor show next March. Upcoming models also featuring convertible hardtops include the Volvo C70, Volkswagen Eos and Chrysler’s next-generation Sebring convertible.
The Spies have obtained inside information from within BMW that the convertible will be announced earlier than AutoWeek is predicting.
Look for the convertible to be announced in the fall of 06, with its first US appearance at the 2007 Detroit Auto Show.