Matchboy: Might be worth asking whether your order is 1st with your supplying dealership. If not then that would add some credibility to my "allocation order" theory. If you are first in line at your dealership and haven't been bumped back by order changes (have you made any?) getting a build week beyond BW28 makes no sense at all.
I was the first order with my dealership, and they are part of a very large group. My dealer has confirmed to me that I will be the first GTI (other than the demo) that they receive. I've not made any changes to my original order. And I haven't specced a panoramic roof!! So, how is my car BW28?? Makes me angry just thinking about it!!
Bear, when I was told by VW that from BW22 orders will be given a confirmed BW, they couldn't give me even an estimated BW for mine. Said their systems wouldn't allocated any BWs until 22.