Sword, Spider is referring to an iOS app (
https://itunes.apple.com/us/app/deliveries-a-package-tracker/id290986013?mt=8) you can choose Apple as a shipping party, enter your Apple order number and email and it will track the delivery for you. Now at point of Preparing For Shipment the number of days showing and estimated delivery should be taken with a grain of salt as it can mimic whats showing on the Apple Store order screen but once it physically ships it will start counting down for you and show you on the map.
Great app, been using it for UPS, FEDEX, DHL etc for years