The first service pack for Q2 2015 for UI for ASP.NET AJAX is live and ready for use. You can download it either from your Telerik.com account or via the Telerik Control Panel.
Learn how you can use our Kendo UI, UI for ASP.NET MVC and UI for ASP.NET AJAX products in the Visual Studio 2015 RTM with .NET 4.6 and .NET 5 version now!