[jdietrich]

Going down to 7" has a drastic effect on portability. You can fit a Nexus 7 into a coat pocket and use it much more comfortably while standing, which is a really big deal for a large part of the market. A 7" tablet isn't much worse than a 10" when used on your sofa, but it is vastly better on a crowded train. I think that the 7" form factor is the sweet spot between a smartphone and a Macbook Air, and that 10" tablets are becoming a niche item.