There's no way they can make a macbook air radically smaller than the pro, it won't happen. MBA screens are already very good.
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MBA Mid 2011
iPhone 5 16GB at&t
iPad 3 16GB
iPod Touch 8GB
really all i want is the new chip and longer battery life on the 11. if they wanted to increase the screen size by reducing the bevel i wouldn't cry but to me i am dubious about the utility of a retina screen on an 11" MBA with today's battery technology...
and on the 13" i'm not really sure what the point is. the 13" RMBP is only .5 lbs heavier and actually has a smaller footprint.