Creating apps for Windows 8 and Windows Phone 8
With the platform alignment of Windows 8 and Windows Phone 8, you can create Windows Store and Windows Phone apps that reuse code. Now you can expand the market for your Windows Store app by creating a Windows Phone version of your app, or extend the capability of your ecosystem to include both a Windows Store app and a Windows Phone app.
For details on reusing code in Windows Store and Windows Phone apps, see Windows Phone 8 and Windows 8 app development.
Build date: 11/19/2013