I watched the first half of the video.

Looks like the only thing they have done better than Maemo5 is make transitions a bit faster, and add multi-touch for zooming.
Not to mention, 6 tabs at once max? MicroB can do that, and more! Flash & HTML5? Doable.

Also, no multi-tasking? Gees.
I mean, if, on my N900, I can run frigging -runescape-(which maxes the CPU, uses a lot of ram, etc), then go and browse the internet while its running(and still have decent performance), a newer device ought to be able to do more than -that-!
However, it seems Micro$oft is following in the footsteps of Apple - How are they gonna get any market share out of that? "shiny and 'just works'" is already taken by apple; Do MS -really- think they can do better?

Silly.