Xbox Live Integration Confirmed For Windows 8

According to Microsoft's VP of global marketing Mike Delman, Microsoft will be integrating Xbox Live with Windows 8.

Apparently XBL will be implemented into the new operating system as a source of entertainment. In an interview with the Seattle Times, Delman stated,
I think thats going to be a good play for us, he said. If we have that and the PCs to leverage, that will be a big Live base. Its our job to make [it to where you can] buy a movie in one place and play it everywhere, buy a game in one place and play it everywhere. Making things portable will be a big focus of ours.
He then spoke on the exact content and the outlook of the service.
Whether its us or Apple or anybody else, people want to be able to navigate through multiple devices in a certain ecosystem very seamlessly so were committed to that, he said. Xbox Live will the pervasive media service across devices.

We have a ton of assets. Unifying the assets will be good for us and good for consumers.
Windows 8 is expected to be released next year.