Funny, I remember all this being said a few years back when Windows Phone was announced. Then WP7 was delayed, so M$ came out with Windows Mobile 6.5 and of course an 'amazing devise called the Kin.
Image when WP7 was finally officially unveiled at the beginning of 2010, it only took M$ another 10 months to get it to market.
In that year and a half since getting to market, WP7 has managed to get a whopping 3% marketshare, before closing the books on WP7 and screwing their mobile customers a second time in just 3 years.
Now we get to Windows 8 and for some odd reason, people believe that this has to be it; M$ finally has a sustainable mobile OS, and as a customer I surely won't get screwed again! But when will we see WP8 and tablets running Metro from M$? They said October 2012, which is just two months away, but M$ still can't tell us what processor they are gonna be able to use in the RT version of the Surface tablet! So, again, expect a 6 month delay on WP8 tablets, or a rushed version that will be a crappy user experience. M$ is famous for giving its customer that.
In the end, you can say Microsoft will be the best, throw those pom pom's in the air and shout 'down with Android', but all you have to do is look to the recent past and today to see the future of Microsoft in the mobile arena. Doesn't matter if it is tablets or phones, M$ just doesn't provide a product people want to buy, hence 3% marketshare. And before you say, "yeah, but look at all the computers running windows in homes and placesr of work!", yes this is true Windows is everywhere, but that is due to a lack of choice. When you buy a budget computer or get bids for your company, Windows is the only option you get. If given the choice, people are choosing not to pick Windows.
P.S. If M$ is going to make the October launch of the Surface tablet, shouldn't they be able to give us a rough price, battery life expectations, will it be 3g, 4g, lte, wi-fi or what and of course, what size of memory it will have. There are only about 85 days left (which means these tablets should be in production already, and yet there is nothing being said.) i smell delay!