To go with the new AirPort Extreme and Time Capsule announced at WWDC 2013, Apple is now pushing out an update to AirPort Utility for Mac. Version 6.3 allows you to set up and manage the new AirPort Express and Extreme, as well as the new Time Capsule. In addition, it also provides you with the facility to configure the 802.11ac WiFi on these devices alongside some enhanced remote management features.
To update head on into the Mac App Store and click the updates tab, or via Software Update.
