I love my MacBook Air, and am dreading the release of a new improved one which I'll be deliberating over buying for months. That said, a little bit smaller and

I love my MacBook Air, and am dreading the release of a new improved one which I'll be deliberating over buying for months. That said, a little bit smaller and higher-res screen, 500g lighter, 4GiB of RAM and a 3G modem would be almost irresistible.