# v4.0.0 to v5.0.0

## Runtime compatibility

Appfigurate app version 5.0.0 is backwardly runtime compatible with apps and app extensions linked against earlier versions of Appfigurate Library.

## iOS source compatibility

Appfigurate Library version 5.0.0 require the following source code changes to your app:

*  Existing Swift `APLConfiguration` subclasses *may* require you to add an initialiser.

New functionality:

* Displaying overridden configuration in a SwiftUI is now easier using the new [`.configurationView`](/additional-reading/displaying-overridden-configuration.md#swiftui) modifier.


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