I hope so, too. DX10 is the one and only Vista feature I like the sound of (though, of course, I'm on a DX8 video card; ).
Here's a breakdown of all the fancy shmancy new features of DX10:
http://www.tomshardware.com/2006/11/..._is_all_about/
Personally, I like the sound of "instancing 2.0" the best. Drawing a million unit army for the processing cost of one, each army unit individually animated and moving (though of course the individual animation and movement and AI doesn't take up the processing cost of one unit)? Sweet. Though it sounds like it could be better implimented for tree leaves and individual blades of grass and rain particles that individually splash on the ground and streak down windows and cars and stuff. *drool*