Apple released AirPort Utility 6.0 for Mac OS X Lion, with the major change being the new interface, similar to its iOS AirPort Utility (app) available through the iTunes App Store for the iPhone and iPad. The new AirPort Utility 6.0 streamlined the setting with fewer windows required to access the full range of settings.
About AirPort Utility 6.0 for Mac OS X Lion
Use AirPort Utility to set up and manage your Wi-Fi network and AirPort base stations, including AirPort Express, AirPort Extreme, and Time Capsule. See a graphical overview of your Wi-Fi network and devices. Change base station and network settings, or manage advanced features such as security modes, wireless channels, and more.
For the latest information on AirPort software, check Software Update in System Preferences or the following Apple website: Apple Support Downloads
Learn more about Apple Wi-Fi at: http://www.apple.com/wifi/
This application only works with 802.11n AirPort devices including AirPort Express, AirPort Extreme and Time Capsule.
For non-802.11n AirPort Base Stations, AirPort Utility 5.6 (for Mac OS X Lion) is also available (for 802.11g).
About AirPort Utility 5.6 for Mac OS X Lion
Resolves an issue with using network passwords stored in the Keychain
Works with AirPort Express 802.11g and AirPort Extreme 802.11g base stations
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