This will not sell outside of fanboys.
This is a rip-off, Intel did all the work with Haswell to save battery, Apple didn't even update the RAM or the SSD which are getting extra cheap on the market.
This is an unacceptably weak update.
If someone doesn't have an Air, and wants one, this isn't a ripoff. It's the most awesome portable computer ever created.
If someone already has an Air, and doesn't want a new one, this one is better, and is the most awesome portable computer ever.