Microsoft has announced that Office System 2010 will be RTM in April.
The official launch has been set to May 12th.
Be patient :), it’s arriving
http://blogs.msdn.com/sharepoint/archive/2010/03/05/sharepoint-2010-office-2010-launch.aspx
Site launch
http://sharepoint.microsoft.com/businessproductivity/proof/pages/2010-launch-events.aspx