January 9, 2009"..... in a few weeks time, a final version of
Skype 4.0 for Windows will be made available. As part of the all new Skype, our engineers have developed something we are calling ‘super wideband audio,’ which is available today. This new speech codec produces incredible sound quality – even when bandwidth is low. You just need to download the updated beta.
If you use a sound card and headset or speakers which support sampling above 16khz, you’ll already get the full ‘super wideband audio’ experience. While there are a number of headsets and devices that already support this, we will be announcing a number of ‘super wideband audio’ certified devices over the coming months.
http://share.skype.com/sites/en/