Here is a part of Microsoft's announcement:
This year, Xbox becomes the premium entertainment service for Microsoft. Whether on your PC, tablet, TV or phone, Xbox will be a gateway to the best in music and video, your favorite games and instant access to your friends.
With the launch of Windows 8, we’ll bring Xbox entertainment to everyone. With Xbox on Windows 8 devices, we rapidly accelerate the reach of Xbox entertainment from more than 60 million people to hundreds of millions of people worldwide.
At the same time, with development of technology, the way we entertain ourselves has changed very much. Now when you and your friends are watching TV, listening to music or playing games, you can still use tablet to surf the Internet and make phone calls. What Microsoft wants to do is making users enjoy more interactions and entertainment with Windows 8.
Microsoft is working on its new music service and they plan to integrate it into the XBox.
Zune is a digital media brand owned by Microsoft which includes a line of portable media players (now discontinued), a digital media player software for Windows machines, a music subscription service known as a 'Zune Music Pass', music and video streaming for the Xbox 360 via the Zune Software, music, TV and movie sales, and the media software for Windows Phone.
Xbox Live is an online multiplayer gaming and digital media delivery service created and operated by Microsoft Corporation. It is currently the only online gaming service on consoles that charges users a fee to play multiplayer gaming. It was first made available to the Xbox system in 2002. An updated version of the service became available for the Xbox 360 console at that system's launch in 2005.It was announced on June 10, 2011 that the service is going to be fully integrated into Microsoft's upcoming Windows 8.
Reference : http://thenextweb.com/microsoft/2012/05/29/zune-killed-as-microsoft-makes-xbox-its-big-entertainment-play/
