Porsche->ke1 surprised the automotive world when it took the first prototypes of the revised 911 Turbo out for some tests just a few weeks after the new-generation 911 Turbo hit the market. And now our spy photographers have managed to spot yet another prototype->ke146 out for a new testing session during cold winter conditions.

The prototype is wearing nearly no camouflage, as the changes made will be minimal and will include revised front and rear bumpers, and new taillights that will likely get the same 3D look revealed by the Macan->ke2674.

We don't expect any changes under the hood, so the 911 Turbo will likely keep the same engine as the new-generation 911 Turbo: a turbocharged, 3.8-liter, six-cylinder with direct fuel injection that delivers 520 horsepower in the standard model and 560 horsepower in the S version.

Expect to see the revised Porsche 911 Turbo->ke571 sometime in late 2015.

Spy shots

The prototypes caught testing by our spy photographers wears pretty much no camouflage, as Porsche keep the changes to a minimum.

Updates will include updated front and rear bumpers, plus a new set of taillights similar to the 3D ones we saw on the Macan.