Re: @Vector
"Are you trying to convince us that paperback is the ideal reading size..."
No, but I am pointing out that the most common size for modern reading material is much closer to 16:9 than 4:3, so I don't buy the whole "4:3 is so much better for reading" argument anymore than the "you'd have to sand down your fingers to use a 7 inch tablet" pitch or any of the other justifications that come out of Cupertino.
Besides, I don't know if you've noticed, but iPhones have been 16:9 for a while now...