Currently I explore the Visual Studio 2015 RC and realized that Xamarin Studio is integrated into Visual Studio and its installer. My Question is: Is Xamarin from now on free in
Visual Studio 2015 does include Xamarin Starter edition https://xamarin.com/starter
Xamarin Starter is free and allows developers to build and publish simple apps with the following limitations:
Xamarin Starter installs automatically with Visual Studio 2015, and works with VS 2012, 2013, and 2015 (including Community Editions). When your app outgrows Starter, you will be offered the opportunity to upgrade to a paid subscription, which you can learn more about here: https://store.xamarin.com/