Car magazine has added more info on the coupe said to be called Project M100, saying that in addition to being a birthday gift for BMW, it will also be a going-away statement to current chairman Norbert Reithofer, who is expected to retire in 2016 or 2017. It will also be so thoroughly reworked that there will be plenty of daylight between it and the standard i8: a more integrated carbon fiber and aluminum chassis, a wider range of materials used in the build, a larger luggage bay due to the omission of rear seats, a more aggressive suspension supporting heartier brakes and wider tires, and - perhaps - a different aero and ground-effects package to be visually different and make the most of the alterations.
As for that power unit, Car says that the two options mentioned by Automobile are still under consideration, being either a 2.0-liter twin-turbo four-cylinder with 320 horsepower and a 204-hp electric motor, or a 3.0-liter straight six with 480 hp and an electric motor with 109 hp. Either choice gets an integrated starter motor good for another 27 hp, and a total torque number of roughly 520 pound-feet, 100 additional lb-ft than the current car. Word is that it will be shown for the centenary in 2016 then go on sale by the end of 2017.