I chased this up with SEAT customer services and part of the response was:
"I have liaised with our Product Support Team and can confirm that your Cupra Ateca has a confirmed build week of 04 which means it will go onto the production line on the week commencing 14 January. "
"It is estimated that your vehicle will arrive at the Retailer within 8-9 weeks once built, however this is subject to change. "
It's good to hear that my build has been confirmed as week 4, but that should be the week commencing 21st January, shouldn't it?
Also, 8-9 weeks for delivery? Is that normal?