I'm unsure. The tech spec and form are very nice. But not so sure about the choice to go iPhone OS over stripped down OSX. The only reason I want one is to watch films in bed or on the train/plane.
Isn't the iPhone OS a stripped down OSX anyway?
I quite like - I have a netbook and frankly I'm a now unimpressed with it - it's fine in principle but the format seems to be blessed with a certain wrongness - it's effectively a stunted laptop that falls into the hole between being a good portable device and being a good laptop. As a consequence it doesn't seem to do either role particularly satisfactorily, and I find it sits on my desk gathering a fine crop of dust more often than not. The iPhone is in my pocket anyway, and if I want to do some real work, I may as pack the 13 inch laptop.
The iPhone / iPod Touch is a great portable device, but it's not big enough to do anything significant with. Yeah, you can zoom in with your browser and squint at video, and it does very well at being an ebook for plain vanilla text. But it doesn't scale up to be really useful unless you really like peering at teeny screens and waiting for your myopia to get worse.
So, I think the form factor has promise, assuming the functionality is there. I think the problem to date with the tablet format is that they have tried to be something they aren't, and they have failed to create their own niche, which isn't an inflated PDA or deflated laptop. I'm keen to see how it works in the wild, but o shiny temptation.