Boy, they are in worse shape than I first thought. They will open source the parts they own of this beast, the problem is it will be too late to make a difference.
Sure, he brings up the fact that they can update the majority of Web clients in less than a year. But what was it they said about the currently fastest growing web-browser out there? 95% of browsers updated within the span of a few weeks? (I don't recall the sources, sadly)
And this one is almost too good to not take out of context: "We strongly believe the Web should remain an open environment with consistent access to content and applications". Oh well.