Lately, I have gotten the feeling that the IE team has become much more powerful within Microsoft and secretly want to make Chrome OS powered by IE11 or something. Microsoft seems completely obsessed with HTML+JS for some inexplicable reason. Their great vision of the future is for you to log into windows and Trident.exe loads up and renders everything from remote desktop to notepad using almighty HTML5.
Steve Jobs is probably wetting his pants from laughter at all of this. Apple thinks of HTML5 as a nice marketing buzz word to distract from the fact that they don't want to add Flash support because they want all "rich" apps to funnel through their app store. They don't care about being open or interop friendly and it is working for them.