Silverlight 8.1
This release provides limited support for Silverlight 8.1 apps:
•	You can create a Silverlight-based Windows Phone (code-named “Blue”) app using C# or Visual Basic, or you can upgrade an existing Windows Phone 8.0 app to Windows Phone (code-named “Blue”).
•	The Solution Explorer context menu provides new options for upgrading a project from Silverlight 8.0 to Silverlight 8.1.
•	You can deploy your app to the Windows Phone (code-named Blue) emulator or to a device.
•	Debug with break points is supported for Silverlight 8.1 apps.
•	To upgrade your C++ Windows Phone 8 project, use the Upgrade VC++ Compiler and Libraries context menu item.
For more information, see Silverlight 8.1 under Known issues.
Developer productivity tools
•	The following architecture tools in Visual Studio Ultimate now support Windows Universal projects: Code Map, Debugger Map, Dependency graphs, Architecture Explorer, UML designers (and their associated reverse engineering capabilities), and layer diagrams.
•	Code Clone now supports Windows Universal projects; it can identify clones from head and shared projects.