This is a slightly belated "catch-up" post to update those that haven't seen it elsewhere, but Scott Guthrie has posted further details (Parts 3 and 4) of  the ASP.Net MVC Framework on his blog.  ASP.Net MVC Part 3 is available here and ASP.Net MVC Part 4 is available here.

ASP.Net MVC is not a solution for everyone as you lose things like state management and parts of the page lifecycle. It does however offer very targetted functionality for those that have a specific need for Model View Controller based solutions.

The ASP.Net MVC framework is now available for download as part of the new Microsoft ASP.Net 3.5 Extensions Preview . This is a roll-up release of new functionality to be added to ASP.Net 3.5 and ADO.Net  in 2008. It currently includes the following:

• ASP.Net MVC Framework
• ASP.Net Dynamic Data
• ASP.Net AJAX
• ADO.Net Entity Framework
• ADO.Net Data Services
• Silverlight Controls for ASP.Net

Some of these elements were previously available via the ASP.Net Futures CTP.  This is now superceded by the extensions preview.

You can get the ASP.Net 3.5 Extensions Preview from here