Check out the November issue of Wheels, page 30, bottom of the page. Its got spy pics.
"Toyota's next generation Supra is expected to follow BMW's M5 with an F1-inspired V10. The photographer who took these shots of a Supra prototype at the Nurburgring says it sounds like a 10 cylinder F1 engine. A 250kw 3.5l Direct-Injection V6 is already rumoured to be the base angine for the new model, believed to be based on a short-wheelbase verison of the next Lexus GS platform."