C/D is claiming that Porsche might resurrect the 911 R badge for a limited-edition Carrera. Such a vehicle would feature not only a nearly 500-horsepower, naturally aspirated flat-six derived from the GT3's engine, but also a do-it-yourself manual transmission. We're betting it'd be the Carrera's well-regarded seven-speed manual, provided it could handle the output.
As for how this car will look, that is perhaps the most exciting angle. According to C/D, Porsche insiders called the 911 R "a wolf in sheep's clothing," describing subdued sheetmetal that won't trumpet this car's high-performance nature. Yes, there's could be a sleeper 911.
We'll keep our eyes open for anything that corroborates Car and Driver's rumor, but until then, take this news with a grain of salt. If the 911 R does see the light of day, it will likely be in March at the 2015 Geneva Motor Show.