No word from BMW Australia if the M6 Cabrio would make it down under, but one would assume it would be dependent on demand, and by looking at it, there is bound to be a bit of demand! The car is powered by BMW's 500-hp, 5.0L V10 Engine. The current standard M6 costs $274,000, I would expect the M6 Cabrio to start around $283,000 or so.
Some official photos of the upcoming 2007 BMW M6 Cabrio have been leaked:
BMW M6 Cabrio Pictures