Skype 2.2 Beta for Linux is the new release and it brings Skype Access to Linux users. Skype Access allows users to access many commercial WiFi hot-spots (such as those from Boingo) and to pay for it using their Skype credit. It's not exactly a killer feature, but potentially handy and is simply another feature previously available to Skype Windows and Mac OS X users.
The 2.2 beta for Linux also improves audio and video quality and its reliability. There's also proper handling of multiple calls, PulseAudio fixes for Ubuntu users, KDE graphics issue fixes for Oxygen, and many other changes.
Today's announcement was made on the Skype blog and there's the release notes with more information on the changes.
Expect more exciting work soon.