The end of Windows 7 Beta is August 1, 2009 and it will begin shutting down every two hours starting on July 1, 2009.
The end of Windows 7 RC is June 1, 2010 and it will begin shutting down every two hours starting on March 1, 2010.
Remember if you are running Windows 7 Beta and want to go to Windows 7 RC, you will need to backup your data and do a fresh install of the OS.
