Here is the first image that shows the 2012 BMW M6 Cabrio completely
undisguised. This beefed up version of the regular drop top M6 was spied
inside a parking lot at the Bayonne Military Ocean Terminal in New
Jersey and from what you can easily see the Bavarians have applied the
same recipe that proved successful  so many times before.
talking about the fact that the 2012 BMW M6 Cabrio received a sportier
looking body kit comprising of restyled bumpers, fenders and side
sills, a twin tailpipe dual exhaust system and high performance brakes
with blue callipers housed behind the M style alloy wheels.
car is also featuring a blue exterior finish typical to M cars, while
under the bonnet the new M6 is expected to feature a 4.4-litre
twin-turbo V8 rated at 552 HP (you guessed it ! the same engine found in
the new M5).
Considering that the 2012 M5 takes 4.4 seconds to
reach 62 mph from a stand still, we assume that the new M6 will brake
the 5.0 seconds barrier as well.

Source: AutoSpies