Is it Aluminum? 2016 Ford F-450 dually caught in the wild [Spied]

2016 ford f-350 f-450 spied prototype
(provided by mrtruck.com)

Ford has already upgraded their Power Stroke turbo-diesel motor for the 2015 model year, while they kept the same body.  Now, we have detailed pictures of the next generation 2016 Ford F-450 dually.  It’s obvious that Ford is careful to hide the new exterior and interior styling.
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The 10-lugs wheels point to the new F-450 model.  This truck has enough cladding and wrapping to cover a basketball court.  The vertically stacked headlights look to be poking out behind the mesh.  The grille is truly massive.  It’s tall and wide.  The entire truck appears slightly taller than the current model.  Could the next Super Duty carry an all-aluminum body, same as the 2015 F-150?

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Check out the body panels over the dual rear wheels.  That structure appears temporary.  Perhaps Ford is working on a fully integrated bed panel, similar to Ram HD?

Watch the 2015 Ford F-350 Super Duty with the new 6.7L Power Stroke debut at the 2013 Texas State Fair.