http://blog.caranddriver.com/porsche...pen-next-year/
Indeed, it does already produce the wickedly quick 911 Turbo, but Porsche for the first time will bolt turbochargers to the base 911 Carrera and next-step-up 911 Carrera S models. At least, that’s what Car‘s sources say. For the Carrera, this means a reduction in displacement from 3.4 to 2.9 liters, while the Carrera S will keep its 3.8 liters of flat-six.
Is the sun truly setting on the naturally aspirated Porsche flat-six?
So what does this mean for the 911 on a macro scale? Well, presumably if the base cars get turbos, so, too, will the myriad spinoffs Porsche has created over the years, from the GTS to the Carrera 4/4S to the Targa. Indications are that the hard-core, track-ready GT3 model will remain naturally aspirated but could go on an even stricter diet to eke out more efficiency.