I wouldn't read too much into any Tesla tell you.
Orders are totally random, there is no sense to when you order, pay, how you pay, lease, cash, PCP etc.
Just over on the UK Tesla forums - guy ordered 21 August, picking up tomorrow (SR+ black). Others have been Day 1 reservations (2.5 years ago), ordered the 1st day they went live in May, and don't even have a final invoice/delivery date etc.
I'd be amazed if they are prioritising any suppliers - it's all very much matching cars to individual orders I think - whatever they get they match.
I was given Mid September, then end of the month, spoke to Edinburgh yesterday and now given early October as a possible timeframe
It's pure pot luck - no rhyme or reason to it at all