From Scott Guthrie:
The ASP.NET team recently released the first public preview of ASP.NET MVC Version 2. You can download it here.
Today’s preview works with .NET 3.5 SP1 and VS 2008, and can be installed side-by-side on the same machine as ASP.NET MVC 1.0 (meaning they don’t conflict and your existing ASP.NET MVC 1.0 projects will not be impacted if you install it). If you have both ASP.NET MVC 1.0 and ASP.NET MVC 2.0 installed you’ll see two ASP.NET MVC project templates within Visual Studio 2008’s “New Project” dialog.
Checkout Scott’s Blog: