Build week 46 confirmed for my GTI as well, from 6th September order placement. Original lead time estimate was 22 weeks, so its likely to be much quicker than the dealer originally forecast. My order was timed to align with the forthcoming 14 plate, so the early build is a bit of a disappointment (although its very tempting to just take it early!). However the dealer thinks March 1st collection should still be possible as they claim to have 10 weeks leeway on delivery (although I suspect even 10 weeks may not be enough if the VW build/shipping process works quickly). Just hope the car is not parked in the open with the battery going flat between times!