In a nutshell, this is about the best overview you will currently find out theree on the new 2007 Microsoft Office system.  The session covers innovations in the client-side user interface and XML-based file formats, as well as investments in new SharePoint server-based capabilities around workflow, content management, search, forms and Excel services :)

Watch Chris Caposella's session Introducing the 2007 Microsoft Office System: Amplify the Impact of Your People