If you were wondering just when Porsche would unveil a revamped 911 Turbo, your wait is over. The automaker revealed the new 2010 Turbo today, well in advance of its September premiere.

While the car receives a number of small visual tweaks first launched on the 2009 911, the biggest news is what lies underneath the hood. The new 911 Turbo ditches the 3.6-liter mill found in the current car, and moves to a direct-injection, twin-turbocharged 3.8-liter flat-six. Porsche says the new engine pumps out 500 hp (20 hp more than the current 911 Turbo), all while improving both fuel economy and CO2 emissions.

A six-speed manual transmission is standard equipment, but the hallmark of the latest 911 range--Porsche’s seven-speed PDK dual-clutch transmission--is available as an option. We’re happy to hear buyers can eschew Porsche’s standard PDK steering wheel for an optional wheel with simplified shift paddles (the right paddle triggers an upsh