Microsoft has released a preview of the next version of ASP.NET MVC, version 3.0. This new release includes the following new feature;

• View improvements
• New View Engines (Spark, Razor, NHaml)
• Global Filters for cross-cutting
• New action types like HttpNotFound
• Javascript and Ajax improvements
• Model validation improvements
• Dependency Injection improvements

Check out Scott Guthrie's blog entry on this release.