Scott Guthrie posted some fantastic info on ASP.NET Extensions 3.5 to match up with Visual Studio 2008 and .NET Framework 3.5.

http://weblogs.asp.net/scottgu/archive/2007/11/29/net-web-product-roadmap-asp-net-silverlight-iis7.aspx

Highlights:

• Silverlight 1.1 is now Silverlight 2.0
• Silverlight 2.0 will start to get some of the great features that WPF has
• Some of the ASP.NET AJAX Futures (like the browser history control) will be moved into ASP.NET AJAX
• IIS 7 will ship early next year
• There will be new ways to deploy to IIS 7 and do things like versioning and rolling back on single servers and web farms

Great stuff…check it out!