Really amazing video explains mobile development options available with visual studio 2015 like Xamarin, Apache cordova
With Visual Studio 2015, you can use the power and productivity you’ve come to love to build rich mobile applications across iOS, Android, and Windows devices. This video covers trends and common strategies for mobile app development. It also provides a comprehensive look at building cross-platform mobile apps using JavaScript and HTML5, or C# and VB.NET, or even building cross-platform shared components in C++, all within a single solution in Visual Studio.
http://channel9.msdn.com/Events/Visual-Studio/Connect-event-2014/511