Apple has released the AirPort Extreme Base Station with 802.11n Firmware 7.1. This update includes general fixes, compatibility updates, and security improvements for the AirPort Extreme Base Station with 802.11n. This update requires AirPort Utility 5.1. If you have AirPort Utility 5.0 installed, you can update to AirPort Utility 5.1 by installing AirPort Base Station Update 2007-001:
• AirPort Base Station Update 2007-001 for Mac • AirPort Base Station Update 2007-001 for Windows
Apple's newest AirPort Extreme Base Station allows for printer sharing and network storage via its USB port. More info and download link (4.6MB) for AirPort Extreme Base Station with 802.11n Firmware 7.1 here.