I'd love to see it (far more than an X8M) but I'll eat my hat if they make it. For years there have been rumours and speculations about a halo supercar, none have come to fruition since the M1.
Carmagazine.co.uk also reporting that the project has been canned after the X8M main article...
https://www.carmagazine.co.uk/spy-shots/bmw/x8/