It's funny, because when the iPad was first released, a lot of us were hoping for an OS X based device, rather than iOS. Now that the market has been set with that "type" of device, many people, including myself, are doubting whether such a market exists - at least right now.
We'll see. I wish Microsoft well, and I probably have some bias against them. Innovation is good though. I think their marketing is so confused they'll struggle to find any meaningful market share though.