Apple has released a new software update for the AirPort Extreme Base Station.
The software updates the Base Station to bring it into line with the latest version of the 802.11n draft standard, which is now at version two. The update also includes bug fixes and security updates.
The software, AirPort Extreme Base Station with 802.11n Firmware 7.2.1, is available for download. Installation requires AirPort Utility 5.1 or later.
Apple notes the release fixes a security problem that could enable network attackers to affect network performance.