If you haven't heard by now the ASP.NET MVC Beta has been released and is available for download . NB: You will need to uninstall Preview 5 before trying to install. Big ups to the team for getting to this stage and the inclusion of jQuery is a very nice addition. Thanks to Derik for a heads up on some of the changes. There are far less breaking changes than previous releases which is great. If you're using a custom Controller Factory to inject the Controller at runtime you might come across this when you try and browse to a page. The type name System.Web.Mvc.IController, System.Web.Mvc could not be located Because they have added the System.Web.Mvc, System.Web.Routing & System.Web.Abstractions assemblies to the GAC they aren't copied to the Bin by default. So make sure you right click on System.Web.Mvc , go to Properties and set Copy Local to "true". Basic stuff I know but had me scratching my head for a second or two.