Here are three more in a what seems like a never ending stream of MINI Convertible spyshots these days along with an video from AutoExpress:
The first two photos look as if they were taken on the Nuerburgring during the usual BMW testing procedures. While it's obvious this car isn't specced with the usual MCS standard features it is somewhat interesting that the engineers opted for the standard 15″ Cooper wheels for this seemingly rigorous testing.
The video looks like to be from the hot weather testing that was done recently in the American Southwest. It's by far the best video I've seen yet of the MCS convertible. Apparently this video is the source of the three photographs in the post below.