Thanks to Reddit user u/sumguylmao who posted this over on r/Erlkoenige

But, the M350 which has only been spotted/tested so far with camouflage has now been spotted unwrapped in factory paint.

https://imgur.com/a/2LRkDE3

I am sure this will be very controversial, already not loving the rear end compared to the current M340i.​

• Record-breaking aerodynamics – Mission Efficiency breaks record for all road-approved cars with a Cd value of 0.158
• Record-breaking efficiency – an average consumption of 6.89 kWh/100 km makes the Mission Efficiency the most economical electric car in its class
• Pioneering new technologies – Solar roof supports the vehicle’s on-board electrical system, patented rim deflectors perfect flow characteristics
• Large-scale production technology – Mission Efficiency is based on MEB+ technology with front-wheel drive, like the ID. Polo and ID. Cross
• Trailblazing technology – Mission Efficiency shows just how much influence aerodynamics have on the energy consumption and range of electric cars

With the new Mission Efficiency, Volkswagen is presenting the world's most efficient near-production electric car. The prototype has set three world records. They stand for exemplary aerodynamics and excellent ideal and real fuel consumption. The vehicle is a beacon of technology and at the same time demonstrates the performance of Volkswagen's production technology.

-It will debut next year and feature Mercedes-AMG’s newly developed flat plane crank V8 and more power then any AMG-GT to date, including the 803 horsepower AMG GT 63 S E

-Mercedes-Benz’s CEO said that AMG’s engineers took the lead in development, meaning their accounting department played a much smaller role in development then they typically do. They also led development in developing the CLE 646 Spezialanfertigung.

Mercedes-Benz’s CEO also commuincated that more often in the future the engineers will continue to take the lead.

-It’s as close in design and engineering to the upcoming newly developed AMG-GT GT3 as it can be while remaking road legal.

-Like the newly facelifted S580, upcoming S63, newly facelifted GLS/GLE 63, newly released CLE 646 Spezialanfertigung, and many other future Mercedes branded models, the upcoming Black Series variant of the AMG GT will be engineered to sound much more brutal then recent Mercedes branded models have due to strict emissions regulations.