Not so sure about the demo cars, see this EVO posted from official VW internal message.
VW0401-13
We can now confirm that pricing and specification for GTI and GTD are as in the below price list and that Automatic Distance Control (ADC) is standard on both cars.
We delayed the open for order date by a day to make sure we published the correct prices and specifications. Customer orders will be built from week 22.
Only market entry and function cars will be built before the week 22 (27 May) model year 14 change; these will be built without ADC but with cruise control instead.
It would seem to suggest that demo cars will be around mid to late next month, and first orders I guess
we would see be collected around 24/25?
If your build week is 25, maybe your dealer didn't have allocation?
Dave