A week ago, Apple enabled VoIP over 3G and services like Fring had Skype working over 3G right away. Skype, is delaying their services over 3G for now, but the good news is that for the latest iTouch and iPhone users ( devices with faster ARM processors ) Skype will enable the SILK audio codec which allows CD quality sound on Skype-to-Skype Calls.
Skype To Bring SILK Audio Codec Over 3G
