When the Bentley Continental GT was first launched, in 2003, it was three years before a convertible GTC joined the hardtop coupe. For 2011, the Continental GT was redesigned, and so far this year, Bentley has been selling the old-style GTC convertible alongside it. Oh sure, the company has rolled out its characteristic special editions to maintain the appearance of freshness (Continental Supersports ISR convertible, anyone?), but the brand's keenest buyers know what's coming: a new GTC. And Bentley executives say, they've been impatiently asking for it.