* This page is a work in progress.
This page from the Apple Developer Library lists all activities that must be performed prior to submission to the App Store. Completion of these activities are required both for production/release distribution AND beta test distribution.
Set App Icon
The iOS Human Interface Guidelines contains the dimensions for the app icons.
Depending on your target devices, you will likely need:
Add the icon to the project Asset Catalog in XCode.
Set the Launch Screen Images
Set Required Device Capabilities
Select your build target > Info > Required device capabilities.
Add a new row for any hardware devices your app requires, such as GPS, accelerometer, etc..
Information Property Lists page lists all the possible keys.