Developers generally don’t update their app icons frequently, but the aesthetic changes in iOS 7 has created a flood of updated app icons. We’re trying to get those updated frequently, but let us know (via the “Send a request” link below) if we’ve missed any.
To refresh the icon for an existing action:
1. Tap the pencil icon to go into edit mode
2. Tap the desired action
3. Tap “Icon” in the “OPTIONS” section
4. Tap on the “App Icon” section in the bottom part of the screen