I appear to have been one of the lucky ones. I ordered my upgraded mb's for myself for two trips (snacks and Dory) - one in July and one in November - on the day this all went live. I think my order finally went through around lunchtime. I had gotten confirmation emails pretty much immediately after my orders went through. This morning at 5am EST I got a 'Your MagicBand package has been shipped' email for each order.
I did find it interesting that they specify in the email that the complimentary MagicBands and upgrade MagicBands come from two separate divisions:
View attachment 402425