The short answer is: nobody knows. Recent rumours suggest that a hybrid-powered piston-engined coupe with a small rotary range-extender engine might be under consideration, or even a non-rotary-powered piston-hybrid sports car bearing the 'RX-9' badge may be in the pipeline. With Mazda developing inline six-cylinder petrol engines, the latter might be more on the money. But a low-volume expensive coupe is probably not on Mazda's priorities list, sadly. Thank you.