ASP.NET MVC Release Candidate 2 Now Available
ASP.NET MVC enables Web developers to build compelling standards-based Web solutions that are easy to maintain because it decreases the dependency between layers by using the Model-View-Controller (MVC) pattern and provides complete control over the page markup. It also improves testability which enables Test Driven Development (TDD). Click here to download ASP.NET MVC or to learn more about it.
Source : http://www.asp.net/