Skype has updates its Mac app with support for Lion and HD video calls. In a blog post to announce the updpate Skype stated: “we are pleased to announce that we are making even more improvements to our Mac client with the release of Skype 5.3 for Mac OS X. Along with a number of fixes and improvements to the user interface, Skype 5.3 will feature support for the new Mac Lion and HD Video Calls.

Skype 5.3 for Mac OS X is built to work with Apple’s newest desktop operating system, Lion, in addition to being compatible with past versions of OS X going all the way back to Leopard.

With Skype 5.3 for Mac OS X, you’ll also be able to send and receive HD quality video when talking to your friends and family. You’ll need to use the Mac’s built-in webcam or choose from a variety of webcams from our Skype Shop, such as the Logitech C910, to make video calls in crystal clear HD quality. To receive clear HD video calls on your Mac, we recommend an upload/download speed of 1.5Mbps.