I'm not getting the 7" tablet format.
Maybe it's just me, but a 7" tablet sounds like a product designed by asking people what they imagine they want - which isn't a good plan when you're working on a new product class because they don't have any experience to base their opinion on.
Apple probably could have produced a 7" tablet a year or two ago and chose not to. You've got to ask why - I don't believe that we'll see a 7" iPad, that's just analysts hearing that Samsung and RIM are producing them and assuming that Apple will too.
While 7" sounds like a nice pocket size in theory, I suspect that it's too small for most uses - the iPad is just about big enough to read a full page of PDF on comfortably, just big enough to type on comfortably (I avoid typing in landscape mode), just big enough to share when you're looking at something. I don't think there's enough difference in capability between a 7" tablet and a smartphone screen to justify the extra device for most people. Sure, it'll fit in a big pocket, but it's just going to wreck the line of a suit or get smacked around in your combats or you'll leave it at home and rely on the smartphone instead in the same situations you'd leave behind the iPad sized device.
An iPhone is as big as a smartphone can comfortably be, more or less. I wonder if an iPad isn't as small as a general purpose tablet can be, more or less.