Vista Technology

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnintlong/html/longhornintro.asp

This is a great article i found which covers a lot of new technologies in vista, including XAML (WPF), WinFS (not shippin , but an update). I used it mainly for learning some xaml markup and linking xaml to my c# event handlers but its a good read. Also documents Indigo, the new network comunication system in Vista (alternative to sockets)