ASP.NET Web Forms are not part of ASP.NET 5. You can still develop ASP.NET Web Forms in Visual Studio 2015 by targeting to ASP.NET 4.6 or lower version. This will not allow you to use any of the cool features of ASP.NET 5. All Web developers, it is time to explore more about ASP.NET MVC.
2. No More Visual Basic
ASP.NET 5 will not support VB.NET; those who are using VB time to change to C#
3. Integration of GruntJS
4. Unified MVC and Web API controller
In MVC 6, both Web API controller and MVC controller will use the same Controller base class
5. AngularJS Integration
Great support for the popular client side framework, AngularJS. Visual Studio 2015 includes templates for creating AngularJS modules, controllers, directives and factories
6. New Unit Testing – xUnit.net
ASP.NET 5 uses xUnit.net as its unit test framework.