The newest version of the Skype desktop client for Mac OS X is out today, and it brings with it high-defintion video calling and better support for Lion, the most recent version of Mac's desktop operating system.

Skype 5.3 for Mac also makes a few improvements to the app's user interface, specially around how contacts are displayed. Although the previous version worked fine with OS X Lion, this version improves upon that support. It's also backwards compatible with the previous two versions of OS X, Snow Leopard and Leopard.

While Windows users have enjoyed HD videocalling on Skype since last year, version 5.3 marks the first time Mac users have had the feature.

This update comes one week after Skype released, removed, then re-released their official app for the iPad, which has a UI similar to the desktop client.

You can download Skype 5.3 for Mac here and read the release notes here.