Microsoft released ASP.NET MVC 1.0 RC (Release Candidate) today! Scott Gu has an interesting long post on the new features and changes.
The main changes include integrated VS support for adding a Controller and View files, Cross Site Request Forgery Protection, scaffolding support and some form post improvements. This will help developers in building ASP.NET MVC based apps quickly and easily.
Final release will be out by next month, so watch out this space for more!