Not sure if this is old news, anyhow here is the quote in their press release.
NOOK 3G and Wi-Fi Firmware Update Next Week
For book lovers who crave a paper-like reading experience, NOOK continues to be the most full-featured dedicated E-InkŪ device on the market at a great value, starting at $149. Barnes & Noble continues to enhance the overall reading experience and performance of its award-winning, best-selling NOOK 3G and NOOK Wi-Fi devices and will offer a major update to customers next week. More information will be available at www.NOOK.com/support.
Looking at the "support page" this is what the Nook site says
This will be version 1.5 with the following enhancements:
Our biggest update since NOOK was launched one year ago will deliver the most requested features and performance enhancements, including:
- Faster page turns
- Improved search on the device
- Customized Barnes & Noble Library organization
- Password protection
- Syncing last page read across NOOK and all devices enabled by our free NOOK apps
The V1.5 update is expected to be available in late November via Wi-Fi or manual download from this page.