Cross-posting from Paul Andrew's blog: http://blogs.msdn.com/pandrew/archive/2009/07/13/sharepoint-2010-sneak-peek.aspx

There are sneak peak videos on this site for Developers and IT Professionals, as well as a general overview of SharePoint 2010:  http://sharepoint.microsoft.com/2010/Sneak_Peek/Pages/default.aspx

Here's a direct link to the Developer sneak peak video: http://sharepoint.microsoft.com/2010/Sneak_Peek/Pages/Developer-Video.aspx