But it's really the Windows Mobile that's two versions out that's the game-changer. Significantly redeveloped, this WinMo will focus on an upgraded user experience with massive changes made to ease of use, as well as new features like global search and data correlation, meaning the device would, for example, know who you're talking to and give you instant access to email from only that person, or maybe a map with that pinpoints their address. Fingers crossed they'll execute on this stuff -- Microsoft's a big company with lots of wonderful ideas that seem to fall out of the truck on the way to the store.
Source- http://www.engadget.com/2007/12/14/windows-mobile-more-of-whats-going-on-in-the-next-two-versions/