An update to the Apple Store app now provides users with push notifications for delivery updates.
Version 2.6 will give you notifications when your order ships, and when your item is delivered, providing you with regular updates in between. The app will also be able to send you push notifications to tell you when you’re eligible for upgrade pricing on a new iPhone. Because all you need to buy the new iPhone is your Apple ID and password, you can buy your new iPhone direct from the Apple Store app as soon as you get the good news!
The Apple Store app is available for iPhone, iPod touch and iPad here: App Store