The InsideMicrosoft blog has a scoop spilling out a few details about Windows Mobile 7.
So far if this is true the OS will be awesome. Not sure about device support, the feature spectrum hints at motion sensors and multi-touch.
http://microsoft.blognewschannel.com/archives/2008/01/06/exclusive-windows-mobile-7-to-focus-on-touch-and-motion-gestures/