Had a phonecall from my dealer this evening to ask me if I want the park assist after enquiring earlier - I have declined to add it seeing as I get by just fine without it.
There were some other useful few bits of info though. I asked about the colour MFD and he has confirmed that it is standard on the GTD/GTI and was always intended to be, but there is a typo in the pricelist/brochure - this is supposedly the "official line" from VW UK on the whole colour MFD mix-up/misinformation.
He is absolutely sure that all GTI/GTDs will have it but it will still be a cost option for all other Golf model variants (so they will not be getting it as standard for the forseeable). There is supposed to be a new GTI/GTD brochure out this week on VW UK's website - hopefully that will be corrected to confirm colour MFD as standard GTI/GTD equipment.
I also asked if my dad's GTD will be delayed as he ordered DSG and he confirmed that as of now there are no delays associated with supply of DSG gearboxes.
