One of the major new features of the next release of Apple iOS, 4.3, is the hotspot features which allows users to tether wirelessly to the phone for internet access and syncing.
However, according to Engadget, to get the advertised 5-devices it means 3 devices via Wifi, 1 via USB connection and 1 via Bluetooth. This seems somewhat of a waste or technical back step if you will but that’s Apple for you.