I believe that it will be one OS with two or three UIs. For instance, you'll have a device that will look like an iPhone or iPad when you use it like an iPhone

I believe that it will be one OS with two or three UIs. For instance, you'll have a device that will look like an iPhone or iPad when you use it like an iPhone or iPad, touch screen, big icon dashboards. When you plug that device into a docking station and monitor, it spits our a more OS X like OS. Though it's still the same OS, just a different view of it, now that you've got more real-estate. I like to think of it as a responsive OS.