From Dan Fernandez's Blog;

Below are some recently released articles on C# Whidbey, definitely check them out

Three Cool New Features in C# by Markus Egger
http://www.code-magazine.com/Article.aspx?quickid=0303072

C# 2.0 Code Refactoring by Juval Lowy
http://www.code-magazine.com/Article.aspx?quickid=0401071

Six-Part series on refactoring in Whidbey by Michael Yuan
http://www.theserverside.net/news/thread.aspx?thread_id=23559