From Car Magazine
It stands for Porsche Double Klutch (or at least something approximating to it) and it’s Porsche’s equivalent to Volkswagen’s DSG, although the concept was actually pioneered in 1983 on Porsche’s Group C sports cars. Unfortunately, the technology wasn't advanced enough to make it suitable for the road until now.

Like DSG, it’s effectively two gearboxes joined together, one containing the odd gears, the other the even, each having its own clutch. It’s being introduced as a faster-shifting, more economical and more responsive replacement for the old five-speed Tiptronic, but Porsche engineers confided that it could completely replace the six-speed manual on Porsches within five years.

Currently, only the coupe and cabrio versions of the two-wheel drive Carrera can have the £2338 PDK option, but it will be fitted to the Carrera 4 when that is launched later in 2008 and the facelifted Boxster in 2009. But a 325lb ft limit in its current state rules it out from duty in the Turbo, GT3 and GT3. They’ll get PDK eventually, but it needs to be beefed up first.

 

Interesting.

 

yes, the GT3 and GT3!

 

If it will eventually replace the 6 speed manual then it will be very interesting.

We should all hold onto our 6 speed cars now as they may hold their values well.

 

 

What's so funny? The line was in the original thread of DJ.

 

Fact: porsche planned on bringing 80% PDK to the US for 09. Due to shortage its going to be around 50% which is FARRRRRRRRRR greater than the Tiptronic. Im still a 6speed guy but this PDK is here to stay.