We got an HP laptop with an i3 for $650 that has about the same weight, and about the same dimensions, but is more capable than any computer we have in the house. I already consider that "ultraportable" and the cost was about $650 WITH OFFICE included.
Maybe we just got a deal?
I think this is just marketing hype to promote a product that is probably less durable with about the same capability (or less) for more money.