Well Microsoft is ready to launch their iphone/blackberry/android killer phone, or at least killer phone wannabe.
I saw an early version months ago at a CIO Conference in Redmond. it looked pretty cool and if they had released it during the summer I might have gotten one, but like many other people, I just switched to an Android, specifically, the HTC EVO. As one of my guys said, for almost a week straight when he got his, "The most powerful handheld in the world". Not sure how true that is. but it is much cooler than the blackberry curve I had.
Mobile phones a tricky and I don't envy Microsoft having to try and beat some of these. Iphone users are almost rabidly fanatic, and the droid-ers are almost as bad.
It will be curious to see who wins. I remember in the 90's everyone counted Microsoft out of IP networking. They were pushing NetBios. Web browsers, I still have my T-shirt for downloading IE the day it launched. Web servers, I remember not planning to even mention Microsoft IIS in "Running a Perfect Intranet" because it was just not relevant. I'm not sure what the latest percentages are, but clearly they are in the top 3 of those markets.
I suspect the top 3 will end up being iphone, blackberry (assuming they can figure out that the iphone is more than a touch screen) and Microsoft. The droid phones I think will suffer from the same problem linux has. No central ownership confuses the market and makes it risky for CIO's to bet their careers on it. They will own a lot of market share together, but probably won't be a clear winner.
Of course I reserve the right to be smarter tomorrow than I am today.