The ASP.NET MVC Beta works with both .NET 3.5 and .NET 3.5 SP1, and supports both VS 2008 and Visual Web Developer 2008 Express SP1 (which is free - and now supports class libraries and web application project types).
Here's what's new in ASP.NET MVC Beta:
- New "Add View" Menu in Visual Studio
- New \Scripts directory and jQuery Support
- Built-in Model Binder Support for Complex Types
- Refactored Model Binder Infrastructure
- Strongly Typed UpdateModel and TryUpdateModel WhiteList Filtering
- Improved Unit Testing of UpdateModel and TryUpdateModel Scenarios
- Strongly Typed [AcceptVerbs] attribute
- Better Validation Error Messages
- HTML Helper Cleanup and Refactoring
- Silverlight / ASP.NET MVC Project Integration
- ASP.NET MVC Futures Assembly
- \Bin and GAC Assembly Deployment
Also, jQuery now integrated with ASP.NET MVC! When you go File | New ASP.NET MVC Project, you've already got jQuery.
If you was already working with ASP.NET Preview releases the you may not need these lines in your web.config file anymore
</system.web>This is just one of my findings, but I would like to hear more, what other changes may require if I am already using Preview Releases.