Apple's latest version of its AirPort Extreme Base Station (AEBS) supports simultaneous dual-band. As Apple explains, this means that the new Extreme has separate "2.4GHz and 5GHz bandsto ensure top performance for all your devices." As this was a feature I could definitely use, I decided to buy a new Airport Extreme Base Station. My intention was to update my existing older and overly-complicated setup. For those of you considering buying a new Extreme, I have some good news and some bad news.