Office 12 Beta 1 – May 2005
Windows Longhorn Beta 1 – June 2005
Windows Longhorn Server Beta 1 – June 2005
Office 2006 Beta 2 – November 2005
Windows 2006 Beta 2 – January 2006
Office 2006 Worldwide Availability – May 22, 2006.
Windows Server 2007 Beta 2
Windows 2006 RC1 – July 2006
Windows 2006 RC2 – September 2006
Windows 2006 RTM – October 30, 2006
Windows 2006 Client Worldwide Availability – November 7, or November 23, 2006.
Windows Server 2007 Beta RC1 – April 2007
Windows Sever 2007 Beta RC2 – June 2007
Windows Server 2007 RTM – August 2007
Windows Server 2007 Worldwide Availability – September 6, 2007.
Service Pack 1 for Windows 2006 client with WinFS integrated - October 2007.