A production version of the upcoming Jaguar XFR-S was spotted on the Nurburgring recently. This sets forth our thinking that Jaguar is going after the BMW M5, Benz E63 AMG and even the Audi RS6. The Jaguar XFR-S is expected to get the 5.0-liter V8 engine pushing around 550 horsepower. From several spy shots of the purported ‘production ready’ XFR-S, we see a much more aggressive front fascia and beefed up side body panels. The XFR-S looks to get its own unique spoiler, too. Competition abounds in the mid-sized high-performance luxury sedan segment.