If you have downloaded the Beta version of the framework and want to walk through some samples illustrating the new features, there's a whole batch available as a download at http://www.microsoft.com/downloads/details.aspx?familyid=c3c41e75-f8a8-4077-84cf-e43176d93b1e&displaylang=en. The coverage is pretty broad, and includes some samples that work with the new data controls in the Technologies/WinForms subfolder.