Microsoft has released an update that postpones the expiration date of Windows 8 Developer Preview to January 15, 2013
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.An update that postpones the expiration date of Windows 8 Developer Preview