Porsche  is letting out some more details of  two new cabriolet versions of seventh-generation 911 Carrera, which is just  starting to appear in the U.S.  These new models, the 911 Carrera Cabriolet and 911 Carrera S Cabriolet, will go on sale in the United States next spring, Porsche official said.
  Like the coupe, the 2012 911 Carrera cabriolet features innovative aluminum-steel construction with the addition of an all-new convertible top design, which preserves the typically sleek 911 coupe roof line. Intelligent lightweight design that includes extensive use of aluminum, magnesium and advanced high strength steel ensures lower vehicle mass and lower fuel consumption while offering improved driving dynamics and additional comfort. As with the 911 coupe models, the new Porsche open-top models are significantly lighter than their predecessors.
The new 911 Carrera cabriolet can accelerate from 0-60 in as little as 4.4 seconds and achieve a top-track-speed of 177 mph, while the 911 Carrera S cabriolet can reach 60 mph in as little as 4.1 seconds and has a top-track-speed of 187 mph.
  Each of the two new cabriolets uses the same engine as their coupe equivalents. The rear of the 911 Carrera houses a 3.4 liter boxer six-cylinder engine with direct fuel injection, producing 350 horsepower, driving the rear wheels through a standard seven-speed manual transmission or an optional PDK dual-clutch automated manual transmission, according to Porsche product experts. The open-top Carrera S will come with a 3.8 liter boxer six-cylinder DFI engine developing 400 hp. The open-top 911s are significantly more efficient than their predecessors; both models consume less than 10 L/100 km on the New European Driving Cycle. The EPA figures aren't available yet.
With the longer wheelbase, wider front track and host of new features just introduced on the 911 Carrera and Carrera S models, the new cabriolet variants offer sportier driving characteristics, greater precision and agility and increased efficiency.
 As you might expect both of cabriolet versions are pricey. The 911 Carrera Cabriolet MSRP is $97,300, while the 911 Carrera S Cabriolet MSRP begins at $108,000.