Quoted from StangsUnleashed.com
"Next generation Mach1 alive
By Robert Lane
Published: December 10, 2005
(Dearborn, Michigan) StangsUnleashed.com - A reliable source told StangsUnleshed.com that Roush is working on the next-generation Mach1. Prototype models already exist at a Roush facility in Michigan.
As far as a production model S197 Mach1 goes, another Mustang variant (not the California
Special or GT500) is also in the works. Wheter we'll see that variant or the Mach1 first depends on economic conditions.
StangsUnleashed will make more information available next week."