I read somewhere that they will be showing it at the January 2006 CES and will retail around $1500. This has been my dream for as long as I can remember... To have a PC that I can take anywhere and dock at home, work, etc.
Along the same vein I have also dreamt having it dock in a laptop shell, in my car as the CarPC, etc. If they can develop a killer docking solution then this thing could kick butt. Additionally I have always dreamt that this PC would run light applications when used as a handheld. They are accomplishing this by using Windows CE 5 which isn't a bad way to start.
If this takes off I can see it getting quite popular. Now to get a kill graphics card in it