Well there's a slippery slope logic fallacy if I've ever seen one...
Well, I am not saying that it is going to be like it but think about it: Mac Os delayed for the iOS. Updates later and later with few innovations (remember when most of the updates had something really new in it and not only a faster processor). iPad and iPhone before Mac (see OS), form above function (Antennagate), only glossy displays, and only 27 with mini-display port... I am getting worried where Apple will be 5 years from now. They ditched the Computer out of their name a while ago...
Unless they plan to come out later with another size but than why ditch the smaller version, doesn't make sense...