Last week I blogged about the Preview 3 release. One important thing I forgot to mention about this release is that you can now use it with both Visual Studio 2008 as well as the free Visual Web Developer 2008 Express edition.
The SP1 release of Visual Web Developer 2008 Express adds support for both class library projects as well as web application projects (previously only web site projects could be used with it). This new support is useful in itself, as well as in enabling both and Silverlight project support with VWD Express. If you install the Visual Web Developer Express SP1 Beta you can start using Preview 3 with it immediately.
Important: ASP.NET MVC Preview 3 does not require SP1 to be installed if you are using Visual Studio 2008. ASP.NET MVC Preview 3 will work with both VS 2008 and VS 2008 SP1 just fine.
You can learn more about the new VWD Express support for ASP.NET MVC from the VS Web Tools team blog here. This post also includes a free web download that provides ASP.NET MVC Test project support for NUnit-based unit tests. You can use these NUnit project templates with both Visual Studio 2008 as well as with Visual Web Developer Express 2008.
Hope this helps,