With the new Retina Macbook being lighter than the MBA, I hear a lot of people talking about how the Air no longer has a place in the product lineup. Here's the deal: I think people confuse the "Air" designation as meaning weight. I think "Air" is meant as a stripped-down version no dedicated graphics, fewer ports, etc. Similar to the impression you get from the word "Lite" instead of the full version. In this sense, "Air" serves the lineup as their low-cost ultra-portable machine.