I do not see OSX ever coming to any iPad version, rather see ios gaining all the power and the features of OSX and iOS will slowly cannibalize OSX. So when a 13" iPad comes out with an attaching keyboard, what do you do? put OSX on it? I don't think so, so you put iOS on it? again we probably need or want some of the features or interface of OSX. So what do you do on this in between device? The best solution is for one smart OS, that brings the features and power of OSX and adds intelligent switching ie: it knows when you attached a mouse and switches the os interface slightly, put it on a TV and again changes interface, but maintains a fluidity between all of the interfaces. One OS that understands how you want to use it, and all the apps should become universal. Even styles could change depending on the device, icons on the phone could be flat, icons on a large screen could be highly realistic and even show more live info. Each device should run the same OS, BUT each device should intelligently conform to the device or even situation so the interface changes, they sort of do that between the iPad and iPhone now, but it should be much better. One OS in long term is better for developers and better for users.