The Apple Airport software has been updated today to version 3.1 and sports some new functionality:
New AirPort Extreme Base Station features:
Compliant with the final IEEE 802.11g specification
Base station Interference Robustness, which provides improved performance when 2.4GHz devices like cordless phones and wireless video distribution system cause significant interference with the AirPort network.
Automatic channel selection allows the base station to find the most appropriate channel to use whenever it is restarted.
Simpler Wireless Distribution System (WDS) setup experience in AirPort Admin Utility
Administrators have the ability to set the DHCP range on their base station when NAT is on
Performance improvements between wired and wireless clients.
New AirPort Extreme client features:
Compliant with the final IEEE 802.11g specification
Client side Interference Robustness