I installed Visual Studio 2012 release candidate yesterday. My quick n dirty conversion of Prism failed to compile.
I’ve fixed the issue and released a new version on Codeplex http://metroprism.codeplex.com/releases/view/87705
During my original conversion, I used ‘CoreWindow.Current.Dispatcher’ (to try and dispatch a command on the UI context). In 2012 RC, The ‘Current’ property is no longer present; so instead I have replaced with CoreApplication.MainView.CoreWindow.Dispatcher.