For a professional device, the requirements are rather different. For instance, a 20 hour battery life would usually be ample -- who works more than a 20 hour day?
The price can be much higher and professional usage would support it just fine -- remember that it was the office usage that brought PC costs down from astronomical to within reach for most of the population.
The size differential has already been touched on, so I won't belabor that point.
If they slap even a stripped down version of something like MS OneNote on this rascal, and allow it to share pages/notebooks back and forth to a PC easily, and develop a workable searching scheme, they'll have taken a quantum leap in the "Information Appliance" realm.
I'm looking forward to it with bated breath, myself.
