5-Series spied sporting M-like features - next-generation F10 M5 is expected to come with a 4.4 liter twin-turbo V8 producing 592 bhp (441 kW / 600 PS).

Here's a spy shot of a possible BMW F10 M5 prototype.

We say possible because the photo may just be of a 5-Series fitted with an M-Sport package and we cannot see the front fascia of the car in this single photo.

Still, there is a resemblance to some camouflaged F10 M5 prototypes we've spotted testing before, features like the bulkier fenders (than on the standard 5-Series) and the car is sporting a quad-exhaust.

Under the hood of the upcoming F10 M5 will be a 4.4 liter twin-turbo V8 said to produce 592 bhp (441 kW / 600 PS). 0 to 100 km/h will take a mere 4.4 seconds.

The 2012 BMW F10 M5 is expected to debut at the 2011 Frankfurt Motor Show.

Special thanks to old GermanCarFans friend Christian Wimmer at GCF forums.