I don't think they will go that path. It would make much more sense to introduce a desktop version of iOS itself. iOS has already everything that's needed for a

I don't think they will go that path. It would make much more sense to introduce a desktop version of iOS itself. iOS has already everything that's needed for a light desktop OS. It would provide much better experience than ChromeOS, there are already thousands of applications doing about anything and it would require very little effort to adapt iOS to run as a desktop OS and to adapt the existing applications. I think that a hint for that is the recent port of Microsoft Office. If users want more sophisticated OS they can just use 13" MacBook Pro. It's quite easy to guess that the next version will be thinner and lighter and probably cheaper - very similar to the current MacBook Air.