Read original post by Mary Branscombe at Pluralsight Blog
Microsoft’s App Studio just got a whole lot more powerful. In the latest version, you can make universal apps that run on Windows Phone 8.1 and Windows 8.1, as well as Windows Phone 8 apps – you can also include maps, music and RSS feeds. Even better, you can speed up the whole process by getting started in App Studio and then opening your code in Visual Studio.