Although it wasn’t mentioned in the article, the application would likely work on Apple’s 2G iPod Touch which has voice in capabilities (with headset or 3rd party mic). Native Skype (brand) access could be the killer app for new iPod Touches (oh wait, they are already selling pretty well?).
The thing is, Skype is already on the iPhone. Truphone and Fring are already touting their Skype calling credentials and have been for awhile. Having a native, Skype branded phone capabilities would still be a big win for Apple.
Skype launched a new 2.8 Beta version of its software for Macintosh at Macworld that allows for screen sharing, Boingo access and other improvements.