Windows: Skype is out with an official version 5, making the group video chat seen in previous sign-up betas an official option, and linking up with your Facebook account for status updating and quick calls to friends' Skype or landline numbers.
So this release, beyond the usual bug and performance fixes, mainly makes official the group video chat we found a bit wonky in a real-world test. The Facebook integration, at least from the contacts-with-Skype perspective, is pretty convenient. Now you just have to bug your friends to list their Skype names on Facebook.
Skype 5 is a free download for Windows users only. Presumably, Skype will push out the group video features to other clients, as it's a Windows-only feature at the moment.
Skype with Facebook integration and group video calling [Skype - The Big Blog via GigaOM]