I was lucky and ordered a PP that was already queued for build. Order went in on the 1st June, build week was not showing on the app but randomly got a notification saying it had been built on the 8th June. Expected delivery for this model is apparently 4 weeks so hoping to collect mid to late July.
Spoke to VW chat a few days ago and it is awaiting transport to the port. 
It will be interesting to see how long it does take to get to you, my build week is next week so currently debating (with myself) if i take it when it potentially arrives at the dealer or defer to Sept.
I was thinking the same, I was initially told it would be ready to collect in early August, in which case the argument for deferring it until 1st September was a lot stronger. The dealer was happy to store it for the 67 plates. Now that it looks more like Mid July I don't think I would wait the additional month and a half, not that there is much point as there is a lot less focus on the plate these days, more the date it was registered.
If all goes well I think your car will be built by the 23rd, shipping takes 3/4 weeks so I would say late July/first week of August? Only a 3/4 week wait for the new plates. The dealers will be desperate to clear orders prior to the September rush so I doubt they will hang around with the prep.
Edit:- Just had a call from the dealer this afternoon and it has arrived in the UK, they are trying to get it to me before 1st July... Things are moving quickly now.