From our best guess, the Jaguar test mule shown in these spy shots could very well be our first glimpse at the next-generation Jaguar XF, due out around the 2016 model year. The current XF has been around for five years already (launched in 2008), and this mule is likely testing powertrain or chassis components for a new version of the midsize Jaguar sedan.
With what seems to be a stretched wheelbase and wider track, this is almost certainly not a mule for the 3 Series-fighting Jaguar XS. That being said, though, there is also the outside chance that this could be a mule for other future Jaguar Land Rover products including a production version of the Jaguar C-X17 crossover or the Jaguar-based Range Rover Grand Evoque. Only time will tell what these images truly foretell, but if nothing else, it proves that Jaguar is definitely staying busy these days.