Yes, this is a computer generated image of a camouflaged mule.
My thoughts on this: a few months ago, I thought that some kind of retro-design on the 997 might be a good idea. But after seeing the Cayenne and after reviewing what products come from competitors over the next few years, I don't think this is a good idea anymore. Porsche should go ahead with another step of evolution, to offer something spectacular, stylish and aggressive. The "retro" thing might work for a year or two but wears out pretty quickly. My fear is that the new 997 will be as boring as the Cayenne is, from a design point of view speaking. What might be somehow acceptable on a SUV, might ruin a sports car. Porsche has to be very very careful now to build the 997 as the next generation 911, not a modern interpretation of the 993. I know that a lot of people (including myself) loved this idea but right now I don't think it is a very good idea anymore.