Mobile development is increasingly about building mobile experiences that run across many mobile platforms. Visual Studio 2015 includes cross-platform mobile development tools for building applications targeting iOS, Android and Windows, and offers developers choice in what languages and technologies to use to developer their mobile applications.
For developers who prefer the richness of .NET, Visual Studio 2015 enables building Universal Windows Apps to target the breadth of Windows devices, from desktop to phone to IoT or even HoloLens. And by combining Visual Studio 2015 and Xamarin, developers can extend their .NET applications to also target iOS and Android. With Xamarin, everything you can do in Java or Objective-C is available from .NET and Visual Studio.
On top of these, Visual Studio 2015 also provides cross-platform C++ development for shared components targeting iOS, Android and Windows as well as integration with game engines like Unity to easily build cross platform games.
Visual Studio 2015 even includes a high-performance Visual Studio Emulator for Android for debugging and testing Android applications.