http://blogs.msdn.com/publicsector/archive/2008/08/18/wpf-datagrid-the-wpf-toolkit.aspxIn addition to releasing the .NET Framework 3.5 SP1 last week, which included a number of improvements to WPF , the WPF Codeplex site went public.  This site is the home for the WPF Toolkit and WPF Futures. From the site: "The WPF Toolkit isen-USCommunityServer 2.1 SP1 (Build: 61025.2)