The Optimistic Perspective:
I hope Apple has serious plans to introduce something like a “desktop-sized” (15-24”?) iOS device. I have absolutely no idea what this device might look or function like. What angle do you use it at - flat on the table, completely vertical, or tilted, like a writing desk? Does it use an external keyboard? Again, I don’t know - there are brilliant people at Apple with the passion and the paycheck to think through these problems. And they will do so, assuming iOS is to become Apple’s new platform in a complete, decisive, and final way.
I'm hoping for the similar future. But I have no idea what the iOS Desktop product will be like.