Apple has released updates to its Wi-Fi base stations and to the Airport Utility program.
AirPort Base Station and Time Capsule Firmware Update 7.6.1 is for all 802.11n AirPort Express, 802.11n AirPort Extreme and Time Capsule models. It fixes an issue with wireless performance and provides support for remote access to an AirPort disk or a Time Capsule hard drive with an iCloud account.
AirPort Utility 6.0 for Mac OS X Lion gets a tweaked, streamlined interface with fewer windows. Both upgrades require Mac OS X 10.7.2 or higher. You can obtain them via the Software Updates Component of the Mac OS X Systems Preferences app.