Microsoft has added exciting features in every new version of ASP.NET MVC that make developers more comfortable building scalable web applications easily. In this ASP.NET MVC tutorial, we will have a quick look into new and important features introduced in major versions of Microsoft ASP.NET MVC starting from MVC3 to MVC6.
Read full article – http://www.webdevelopmenthelp.net/2014/02/asp-net-mvc3-vs-mvc4-vs-mvc5.html
Hope this will help !!!!