ASP.NET MVC has always supported "view engines," which're pluggable modules, that implement different template syntax options. "default?" view engine for ASP.NET MVC today uses same .aspx/.ascx/.master file templates as ASP.NET Web Forms. Other popular ASP.NET MVC view engines used today include Spark and NHaml.
"The new view-engine option codename "Razor" is currently under development, is optimized around HTML generation using a code-focused templating approach. It's coding workflow is fast, expressive and fun. It's syntax is compact and reduces typing – while at the same time improving overall readability of your markup and code. It'll be shipping as a built-in view engine with next release of ASP.NET MVC. You can also drop standalone .cshtml/.vbhtml files into your application and run them as single-pages – which also enables you to take advantage of it within ASP.NET Web Forms applications as well," explains Scott Guthrie.