Pictured undergoing testing at the Nürburgring, the still heavily disguised prototype, which reportedly will also spawn an M8 version to rival the Mercedes-AMG S65, cuts a distinctive look reminiscent of the original eight, with a low-slung profile and sloping roofline topped off by a large front airdam and trademark kidney grille.
Although details are still fuzzy, Australian online platform caradvice.com.au reports that a trade marking application for 825, 830 850, 860, M850 and M8 has already been filed by BMW, with the latter model tipped to feature the same 441 kW 4.4-litre bi-turbo V8 as the next M5 and even xDrive all-wheel drive.
US publication MotorTrend has however claimed that the 8-series could possibility make use of the CLAR platform as the recently launched 7-series, meaning the same range of engines including the 6.6-litre bi-turbo V12 from the M760Li xDrive. This however remains unconfirmed.
Details are likely to emerge closer to the 8-series' official debut, slated for the end of next year.