I have Xamarin Academic license for iOS and Android due to 19 May 2016. I have VS 2015 Enterprise license also. After the date, how can I use the Xamarin for freely on OS X and Windows as described at Build Day 2 ?
Visual Studio now includes Xamarin
As of today, we are including Xamarin in Visual Studio at no extra cost.
Xamarin will be in every edition of Visual Studio, including the widely-available Visual Studio Community Edition, which is free for individual developers, open source projects, academic research, education, and small professional teams. Develop and publish native apps for iOS and Android with C# or F# from directly within Visual Studio with no limits on app size.
For developers on the Mac, Xamarin Studio is now available as a benefit of your Visual Studio Professional or Enterprise subscription. Developers can use the newly-created Xamarin Studio Community Edition for free.
To begin developing iOS and Android apps with the full power of Xamarin and C#, download Xamarin Studio or Xamarin for Visual Studio today.
Thanks.
For Windows:
If you do a fresh install you can add Xamarin while installing Visual Studio by selecting Custom installation and in features list selecting Xamarin. Below link gives a step by step installation process.
https://msdn.microsoft.com/en-in/library/mt613162.aspx
For existing VS users, below link can help install the Xamarin.
http://www.cazzulino.com/install-xamarin-2015-preview.html
For Mac:
Download and install the Xamarin for Mac and for licensing you can use the VS license details here.
https://developer.xamarin.com/guides/ios/getting_started/installation/mac/