The Windows Phone versions of the Microsoft.Practices.Prism and Microsoft.Practices.Prism.Interactivity assemblies were updated to version 4.0.1 and recompiled against Windows Phone 7.1 SDK "Mango".
Microsoft.Practices.Prism was simply updated to a 7.1 SDK project.
Microsoft.Practices.Prism.Interactivity was also updated to a 7.1 SDK project as well as the following updates:
- Removed BindingListener and InteractionRequestTrigger
- Updated ApplicationBarButtonCommand
Windows Phone 7.1 SDK now supports Silverlight 4.0 which better supports binding to ICommands, removing the need for BindingListener in the ApplicationBarButtonCommand. InteractionRequestTrigger was deprecated in favor of EventTrigger provided by the Expression Blend SDK for Silverlight.