Porsche debuted the new 911 Turbo S this week, but there's something weird about this development vehicle. At the back, it wears a ducktail spoiler that's not on the production version. There seem to be two likely possibilities. This could simply be a way for the company to camouflage the new model. Alternatively, we might be getting an early look at the rumored lightweight model that would take out the sound deadening and rear seats to shed some pounds. Removing the active wing would be another way to drop a little weight.