Check out these links on ADO.NET v.Next:
Blogs:
http://blogs.msdn.com/data
http://blogs.msdn.com/dataaccess
Channel 9:
http://channel9.msdn.com/Showpost.aspx?postid=191667
Screencast:
http://blogs.msdn.com/dataaccess/archive/2006/05/10/594781.aspx