Add more specific instructions for light, dark, and tinted iOS icons

[jmagman]

What information needs to be added?

Our deployment docs for iOS currently say:

1. Review the iOS App Icon guidelines.
2. In the Xcode project navigator, select Assets.xcassets in the Runner folder. Update the placeholder icons with your own app icons.
3. Verify the icon has been replaced by running your app using flutter run.

It would be nice to have more specific instructions that mention light and dark mode. In iOS 18 there's a new "tinted" icon as well. That only works in Xcode 18, which won't release until September.

https://developer.apple.com/design/human-interface-guidelines/app-icons#iOS-iPadOS

This is a nice-to-have, our current docs are not incorrect, and they point to the correct Apple docs.

Where should this new content appear?

https://docs.flutter.dev/deployment/ios#add-an-app-icon

I would like to fix this problem.

• I will try and fix this problem on docs.flutter.dev.