Porsche unveils the updated 911 Turbo ahead of its official launch in Detroit (pictures)

The 2017 Porsche 911 Turbo brings the brand's high-output sports cars in line with the updates thrust upon the base Carrera earlier this year.

Whereas the new Carrera sports a 3.0-liter, turbocharged six-cylinder engine, the Turbo and Turbo S opt for a higher-displacement, 3.8-liter turbocharged unit.

Both the Turbo and Turbo S receive 20-horsepower bumps for 2017. The Turbo now puts out 540 horsepower, and the Turbo S packs 580. The only transmission option is Porsche's PDK dual-clutch offering -- sorry, manual fans.

The 911 Turbo adopts the facelifted Carrera's exterior touches. It's not too hard to pick out some of the updates, like the revised taillights and all-new engine cover.

You won't care about the looks once you step on the gas pedal, though. Thanks to the revised power output, the Turbo now scoots to 60 mph in 2.9 seconds, and the Turbo S will do it in 2.8.

The Turbo's top speed is a nearly-ludicrous 198 mph. The Turbo S, on the other hand, reaches 205 mph if you can find a track that's long enough.

If power and aesthetics aren't enough to whet your appetite, there's a whole bunch of standard equipment available on both the Turbo and Turbo S. Adaptive suspension, parking sensors, a backup camera and LED headlights are all part and parcel with the 911 Turbo experience.

The interior features a new steering wheel that's derived from the 918 Spyder hypercar, including a mode switch that's been tucked under the right spoke. Hit the center button on that rotary dial and you'll experience Sport Response mode, which alters engine and transmission programming to achieve "optimal acceleration" for 20 seconds.

The other notable interior update is an all-new, 7.0-inch touchscreen infotainment system. It packs multitouch support and Apple CarPlay smartphone connectivity. It also connects to Porsche's Car Connect app, which lets owners access vehicle functions remotely.

The 2017 Porsche 911 Turbo will be available at launch in both convertible and coupe variants, and it will debut to the public at the 2016 Detroit Auto Show.

The Turbo starts at $159,200, £126,925 or AU$384,900, and the Turbo S will run you $188,100, £145,773 or AU$456,500.