And I have just found this on the Autocar. I will post just the part about the PDK buttons and the link so who wants can read all the article:
If the new PDK gearbox sounds complicated on paper, in reality it works beautifully, except for one thing; the buttons themselves aren't especially intuitive to use. Unlike rival systems that feature an upshift paddle on the right and a downshift wand on the left, Porsche has chosen to fit upshift buttons which you nudge with your thumbs on top of the wheel on both sides, with the downshift buttons again on both sides at the back. To begin with you may find yourself flicking the left hand downshift button to change up, and all sorts of other odd combos.
Once acclimatized to the way in which the system is accessed, however, the gearbox itself really is something special. Upshifts are almost seamless, even when changing from second to third at 7400rpm. And on the way down it's arguably better still, blipping the revs perfectly to match the lower ratio, and doing so faster and more precisely than any human ever could.
I tried the entry model with the 3.6-litre flat six engine, yours for Pounds63,070 before items like PCCB at Pounds5439 and PASM at Pounds1030 have been added, as they had been to the test car. The new engine is notably smoother and more refined than It was which is, in the main, a very good thing. It suffers from less vibration across the whole rev range, the throttle response is keener than ever, and the relative lack of noise on the motorway is clearly a step forwards.
What's perhaps not so welcome is the lack of aural character of the new engine, Porsche having done such a good job at improving refinement that it is now hard to tell how many cylinders there are and what sort of formation they lie in. Maybe that's a slight exaggeration but, either way, the flat six soundtrack has definitely been toned down a decibel too far. Mind you, it's nothing a factory fit sports exhaust couldn't sort.
http://www.autocar.co.uk/CarReviews/FirstDrives/Porsche-911-3.6-Carrera/211024/