If he has inside information he should not be revealing it. End of story. That's confidential.
If he does not have inside information he is just guessing.
Either way his one word answers seem more researched then other analysts wild guesses.
Not necessarily. Jim's strong track record suggests that he has contacts inside Apple who pass information to him, knowing that it will be publicized. He may know more, but he doesn't do anything but confirm or deny rumors about events and products in the near term. I'm sure that if this weren't tacitly approved at the highest levels it would have ended long ago.