I only used the Cayman in the poll because of this interview from EVO.
http://www.evo.co.uk/toyota/gt-86/19033/mr2-gt86-supra-toyotas-three-strong-sports-car-lineup-is-coming
I have read a lot of reports that states BMW is replacing the N55 and S55 for the B58 and next gen M cars will be powered by the new S58 that will make between 450 and 460 horsepower.
^I'm not going to lie, I had no idea what a Supra was until I saw that movie. I knew Toyota made the Celica and MR-2, but I had no clue that something above them even existed. I never laid eyes on a Supra until I was 18.