Ok, I realize that this title is a bit lofty, and I don't want to give the impression that I don't love LINQ to SQL... but in paroozing around, I see this blog ( http://blogs.msdn.com/adonet/archive/2008/04/09/entity-framework-ado-net-data-services-to-ship-with-vs-2008-sp1-net-3-5-sp1.aspx ) that confirms...