What? I'm not following any more. I thought the iPhone was category #2. The tablet is the third. But I suppose numbers don't matter.

This category has been around for a long time, but no one has managed to define it as well as Apple has. Even though most of us agree that it's not terribly well defined. It's still the best defined it's ever been. Well enough defined that no one (by this I mean the general public) is going to know any other tablets even exist.

Again, this device isn't for me, but I'm not going to argue nor bet against it doing well.