Craig, that was doing the rounds a few weeks ago, compounded by the fact that dealers didn't seem to know exactly what Dynaudio actually was.
I've since spoken carefully to VW customer services who had to go to VW in Wolfsburg for confirmation, but bascially Dnyaudio gives you a 400watt amp and DSP unit under the passenger seat. All 8 speakers are upgraded with the tweeters in the front A-pillars incorporating special "Dynaudio" chrome trims, and a spare wheel mounted sub-woofer which fits inside the space saver spare wheel and doesn't precude the supply of the space saver itself. i.e. you still get the space saver and the sub together.