(http://i41.tinypic.com/2u8dt87.jpg)
Following Microsoft's acquisition of Skype, it's a bit of a no brainer that the world's leading internet calling software would arrive on Windows 8 sporting a new interface that compliments Windows 8's distinctive look.
Skype's integration with Windows 8 isn't just cosmetic though, as a lot of effort has been put into making sure that the app takes full advantage of Windows 8's new features. One of the most useful features is that Skype will run in the background, even if the PC is locked or the app has been closed down. This means that you don't have to worry about missing important calls. Microsoft has also worked hard on minimising the Skype app's impact on battery life, especially when running in the background, making this easily one of the most useful apps for Windows 8.
Link (http://apps.microsoft.com/windows/en-us/app/skype/5e19cc61-8994-4797-bdc7-c21263f6282b)