According to ETKA, there is a new USB Socket module (the one that goes in front of the gear stick), that is USB and Ipod Compatible:
5G0 035 222 D (the "D" at the end is the important bit)- ETKA Description - Electronic Interface for External Use - AUX In, USB (ipod Compatible). This seems to be around the £20 mark ish.
It would seem that this would need to be used with a new connection cable (between the USB Module and the Media unit in the glove box) 5G0 971 650 AA (as this one superseded the old cable on 1st August 2013, again the "AA" at the end is important). These seem to be around the £35-£40 mark.
Of course I've never tried these, just reporting what ETKA says.