On the PDC site there is an announcement today about the PDC 2009. It will be November 17–20 2009 in LA. I'm pretty sure that this will be the PDC to announce Office and SharePoint 14. I'm already looking forward to coming back here next year!
http://www.microsoftpdc.com/View.aspx?post=http://channel9.msdn.com/posts/PDCNews/Save-the-Date-PDC09/&tag=