Hi, the oracle (Ming Chi Kuo) says there's going to be a 13" Macbook. Seems odd to me to make one given there's a 12 incher, but in any event, how much would such a notebook weigh? How much would a 15" macbook weigh? Side note: No idea why Apple does not simply make 3 notebooks of each line: small, medium, large. Everything in life is that way! It is not confusing. The Macbook line, then the Macbook Pro line. Macbook 11, 13, 15; Macbook pro 11, 13, 15. Or Even Macbook 13 or 15. Macbook pro 13 or 15. This has got to be way less confusing than they have it now. Do I want the 13" air, old macbook pro, or new macbook pro with retina display? Do I wan an 11" air or a 12" macbook? It's like the opposite of simplicity. People should not be forced to choose a screen size, and then a design. Do I want a smaller screen with the air design. Or a newer design with less ports but with a bigger screen? It should be pick your notebook line and then screen size. Done.