Skype  4 (download here) has arrived.But now the Skype team has pulled the trigger and replaced Skype 3.8 with the new version of the chat, video chat, and VoIP client.

Improved video calling – With the changes we’ve made, video calling in Skype 4.0 for Windows is the next best thing to being there. A new built-in bandwidth manager ensures that you have the very best video calling experience possible, even on a low bandwidth connection. If you have a fast enough connection (recommended 400 Kb/s or higher) and a high quality webcam, Skype delivers up to 30-frames-per-second High Quality Video at full screen.

Calls and instant messages are easier to manage – video and voice calls, as well as instant messaging, are all easy to reach in a single window. The new Conversations tab makes it easy to hold multiple conversations at once, and to switch quickly between video and voice calls, instant messages and SMS. This is particularly beneficial for the power users among you.

Call quality is substantially improved thanks to a number of under-the-hood changes. Calls sound richer and clearer than ever thanks to support for Super Wideband Audio with compatible hardware. The bandwidth manager should ensure that you have crystal clear calls even when bandwidth is low.

4.0 also sports a radically overhauled user interface – a slicker, cleaner look with less clutter and easier-to-find core features. We’ve also included Compact View, which retains the structure of the Skype 3.8 interface for those of you who prefer to work that way.

Now if I could only forward my voice mail to me email as text that would be awsome.