Apple redesigned the Airport Utility app for OS X. It now looks much like the recently released iOS app and gives you a prettier, more useful look at your network. They’ve streamlined the settings themselves too… this is a huge win UI/UX-wise.
Update: Dan Wineman pointed out that version 6.0, while pretty, removes several useful features (including IPv6 configuration and wireless client monitoring). Turns out you can now install both this version of Airport Utility and the older version, 5.6, which has been updated. You must install 6.0 first and update your Base Stations, then you can grab the 5.6 build and install it as well. Looks like Apple is going for a consumer version for its mainstream release (the version pictured here) but keeping the older, more “pro” version updated as well.
redesign. Finally. maniacalrage: