Although still decked out in camouflage, the F90 will keep its predecessor's 4.4-litre bi-turbo V8, but re-tuned to produce 450 kW and some 700 Nm of torque.
As previously reported, the F90 will also drop the F10's seven-speed M DCT gearbox for a normal torque-converter eight-speed Steptronic, while the six-speed manual offered only in the United States will fall away completely as per BMW's recent announcement that it would no longer be offering three-pedal M cars.
While top speed is expected to be limited to 250 km/h, the F90 will dispatch the 0-100 km/h mark in 3.5 seconds, and, according to BMW, sip unleaded at a rate of 10.5 L/100 km.
The biggest change however, and indeed confirming previous speculation, is that the M5 will come fitted as standard with xDrive all-wheel drive, but with a twist in that allows drivers the option of selecting between 2WD, 4WD and 4WD Sport. In addition to the sport's optimised gearbox with three modes, the F90 also gets a new Active M rear differential that splits torque evenly between the front and rear wheels, and three mode stability control system.
No interior images have yet been released, although expect a raft of M specific features with the only hints being a new M sport steering wheel and gear lever, two configurable M Drive buttons, and an improved Heads-Up Display now incorporating navigation.
While still to be confirmed, expect the F90 M5 to make its official world debut at the Frankfurt Motor Show in September.