Congrats! Similar happened to me. I was October 4-9 now it says September 25th ...
Thanks!
The Apple website says September 28 and they sent me a link to UPS for tracking. Apparently it's still in China because UPS says "Your package has been released by the government agency... Clearance in Progress" 🤣
However... the app still says October 4-9
So that's weird...