From the Nook Color forum on bn.com
Starting today, NOOK Color owners have access to firmware version 1.3, a software update that enhances the best-in-class NOOK Newsstand by offering even more interactive versions of the country’s favorite magazines and newspapers.
In addition to this, the software update includes some system improvements such as the option to password protect the web browser, improvements to the Last Page Read feature, and the removal of the Good Housekeeping Cookbook.
You can sideload the update from here:
www.nookcolor.com/update. The over the air (OTA) delivery to customers connected to Wi-Fi is beginning this week.