I'm looking at trading my 05 C2 coupe for an 07 C2S cab which is currently sitting on the dealership lot. I'm planning on keeping this new car for a long time and it is equipped with navigation. Does anybody have any idea how long it might be before updated navigation dvd's are no longer available for this hardware / version of PCM?

 

Beinga DVD-based version of the navigation system (the current deisgn) I suspect it will be around until someone proclaims the blue-laser DVD is far better,--give it about 5 years. Sadly, computer updated are quicker turnarounds than I am buying Porsches.