Some snippets from the blog. The snipper about shifting "online gaming" from the xbox to the cloud is particularly telling. Live might have some crazy new shit coming down the pipeline.
"We’re shifting our “online gaming” focus from the Xbox to the cloud, which will enable whole new ecosystems for game developers, publishers, and consumers to explore. And we’ve rebuilt the development platform from the ground up to enable those sorts of connected scenarios. While you shouldn’t look for any specific announcements from the diagram below (ie, “mobile” just means “not fixed”), it should give you an idea of where our center of gravity is going forward."

"That said, this will take time. We’ll have to work closely with game developers and publishers to figure out the best ways to enable their goals. We’ll have to work with consumers to understand the sorts of game scenarios that people most want. I’ll be spending a lot of time here writing about those scenarios, what we’re thinking, as well as seeking your input and feedback so we can incorporate into our product planning. And I hope you’ll join in the conversation."