From it's Windows download page (released yesterday):
“Skype is a little piece of software that lets you talk over the Internet to anyone, anywhere for free. And it just got even better — download the latest version of Skype:
- Our call quality is the best ever for talking, laughing and sharing stories.
- You can forward calls on to mobiles, landlines and other Skype Names.
- Make calls instantly from Outlook email or Internet Explorer with our new toolbars.
- Personalise your Skype — play around with sounds, ringtones and pictures to show the world who you are.”
Update: Skype 1.4 on Windows XP seems to freeze after a while (15 minutes or so). The only way to keep using it is to kill the application and relaunch it. Hence I suggest you do not upgrade (worked beautifully before) until there is an update from teh guys in Tallin.