2019 BMW M8 roars around the Nurburgring - video

The BMW 8 Series has already been revealed, but the high-performance M8 remains under (partial) wraps at this stage. So far we know it'll feature a twin-turbo V8, and a rear-biased M xDrive all-wheel drive system, but as far as the final design touches and model-specific equipment it gets over the 'standard' 8 Series? We're none the wiser.