Part of the confusion is regarding the 'dual pixel camera,' in that many people are contemplating that this means such a device would have two cameras on the back. Most who disagree do so based on the assumption that this is simply referring to the 'usual' two cameras - one on front, one on back.
Clearly, I have to explain... Google is once again going to step up its camera game. While many others push for higher and higher megapixel sensors to give the impression pictures will be improved, Google is going the other direction - the new camera is a 'dual pixel' camera, with only TWO pixels! Imagine the low light performance when those pixels can be as large as is afforded by the lens!!
Hopefully this clears things up for everyone.
;-)