Forty years ago, Porsche unveiled the first 911 Turbo at the Frankfurt Auto Show. On that anniversary, the German automaker will return to the same show, four decades later, with the latest iteration of the breed. Just announced today, the new 911 Turbo and Turbo S incorporate a new all-wheel drive system (different from the Carrera 4) and the all-wheel steering system from the GT3. But it trumps both with its 3.8-liter twin-turbocharged flat-six, producing 520 horsepower in the Turbo and 560 in the Turbo S.

With that much muscle transmitted exclusively through a seven-speed dual-clutch transmission to each of the 20" wheels, the 911 Turbo with the Sport Chrono package rockets to 60 in 3.1 seconds, which is already a tenth faster than the previous Turbo S. But the new Turbo S drops another two ticks, down to just 2.9 seconds. Porsche is also quoting a 198mph top speed for both, and says the new 911 Turbo S can lap the Nurburgring in under 7:30. Both versions incorporate a new adaptive aerodynamics system, LED headlights, wider bodywork and a stop/start system to help cut fuel consumption by 16%.

The Turbo S further upgrades with an active suspension system, active engine mounts and carbon-ceramic brakes, pushing the envelope that much further to the extreme. The new performance flagship for the 911 range hits German dealers in September with a list price of €162,055 for the Turbo and €195,256 for the Turbo S. US buyers will have to wait until the end of the year and pony up $148,300 for the Turbo and $181,100 for the Turbo S (plus $950 destination). Expect a convertible version to follow, as well as a new GT2 model that will ditch the all-wheel drive and tighten up the package even further.