They call it the thinnest notebook ever, not the thinnest Apple notebook ever. I can only assume if they had made it 11-12" it would be classed as sub-notebook and so they would have to retract that claim. I'm sure when you take some of the driveless 7-10" machines of past, you would find thinner. There was a Sony I believe which came with HD and DVD in a removable dock. The rest of the machine was almost as thin as the screen.