Apple updated its AirPort Base Station and Time Capsule Firmware today to version 7.6.1:
Also getting an update is AirPort Utility 6.0 for Mac OS X Lion (Release Notes), which looks a lot like the iOS AirPort Utility. This application only works with 802.11N Airports. Yes, everything Mac is going iOS.
AirPort Utility 5.6 (Release Notes) for Mac OS X Lion is also receiving the following updates for those with 802.11G stations:
Resolves an issue with using network passwords stored in the Keychain
Works with AirPort Express 802.11g and AirPort Extreme 802.11g base stations
Apple releases AirPort Base Station/Time Capsule, Camera RAW and MacBook Pro firmware updates (9to5mac.com)
Apple releases AirPort Utility for iOS (9to5mac.com)