The iPhone double-density display is quite nice. The much-rumoured tablet with the same resolution but more screen space would be interesting - although my Apple spies tell me there are cost and weight issues which make it an unlikely item, at least for a while.
The problem I see with the tablet is that if I'm going to carry it I'll bring the MacBook Air, and if I don't want the MBA I'll just bring the iPhone. The tablet would have to be cheap enough to get into my house as a replacement for Sam's iBook for light browsing/e-mail work. We don't strictly need two laptops and a desktop to get the heavier work done. We're not typical though.
