ASP.NET MVC 4 Useful Links

Release Note
       http://www.asp.net/whitepapers/mvc4-release-notes

Using Asynchronous Methods in ASP.NET MVC 4

         http://www.asp.net/mvc/tutorials/mvc-4/using-asynchronous-methods-in-aspnet-mvc-4

Bundling and Minification

      http://www.asp.net/mvc/tutorials/mvc-4/bundling-and-minification

Asp.net MVC 4 Article Series by Nandip Makwana

      http://www.dotnetexpertguide.com/2011/09/aspnet-mvc-4-article-series.html