You can use Xaml with WinRT. But beyond that cosmetic similarity, it gets pretty different. WPF is implemented in .NET, whereas WinRT is more of a replacement f

You can use Xaml with WinRT. But beyond that cosmetic similarity, it gets pretty different. WPF is implemented in .NET, whereas WinRT is more of a replacement for Win32. You can still write WPF apps for Windows 8, of course, but they won't be Metro apps, they won't run on ARM tablets and, significantly for the current conversation, they won't be allowed in the Windows app store.