Skype released Skype 5.6 for Mac, coming with many new features including automatic updates, an improved UI for group video calling, a new full screen mode in OS X Lion, the ability to delete conversations and disable Audio Gain Control.

Skype will now automatically upgrade to newer versions when minor and critical updates are released.

Switch between dynamic mode and non-dynamic mode in group video calls with 5 or more participants. With dynamic mode on, the person who is speaking is automatically moved to the top of the screen.

With the updated Skype you can take advantage of full screen mode in Skype. This feature eliminates distractions from the Dock and Menu bars.

You can also delete messages within a conversation, as well as remove conversations from the sidebar and your history.

In order to reduce the background noise during conference calls, you can now disable the automatic adjustment of your microphone setting in your preferences.

Fixed issues include:

- Chat messages aren't shown after clearing recent conversations or closing the last one
- Choppy audio issue with USB headset while in group call
- Call toolbar does not appear after call is ended
- Selection of contacts in the contact list

Dowload the latest Skype for Mac here.