I have never seen a white cab before, they are all green afaik and it looks too msall anyways. The third pic looks promising though, like they have put the foundations in for a proper cab but building a cab and putting the hardware inside and the cabling are two completely different things and that is going to be a big project which is going to be planned and have timetables for. The best thing you can do is give VM a ring because if the postcode checker says the service isn't available in your area yet customer services should be able to give you an eta of when works are due to be completed.
Incidentally, what does this say?
http://store.virginmedia.com/quick-checkout