This article introduces an update that postpones the expiration date for Windows 8 Developer Preview and for Windows 8 Server Developer Preview. Currently, the expiration date for Windows 8 Developer Preview is set to March 11, 2012, and the expiration date for Windows 8 Server Developer Preview is set to April 8, 2012. After you install this update, both expiration dates are postponed to January 15, 2013.