Something else to consider is that each European territory has both a 'private' and 'fleet' sales allocation that will be considered. Essentially there will be two waiting lists, one for each.
Ultimately there is limited supply of MK7 GTD & GTI per year, over the model life. They are so confident they will hit there numbers they are not worried about complaints over long lead-times.
For example, although the skoda yeti is still being made, the order list for some specific models is so long the book has now been closed.
Much like popular football teams who have a season ticket waiting list, they increase ticket prices, lifted in the knowledge they will always find a buyer; its only possible if the product is amoung the best available.
I see the class leading efficiency and historically low interest rates as the biggest reason for such huge demand across Europe at the moment for what is a slightly over priced product.