Prediction: Devices of this size and capability are going to make a big impact to geekhead and businesspeople alike. Why buy a Palm or PocketPC device which has a watered-down operating system when you can bring the full Windows OS with you? Go on vacation, go to the coffee shop, whatever. Other device makers are also going in this direction as I mentioned on May 25. What could make this prediction fail? If the makes themselves price these things too high. Ideally they should be in the $500-1000 range, but I predict they'll be higher. Most people won't buy in at that point.
At any rate, this is good news for those of us who like our data to go.