As for this mythical tablet from Apple, if such a thing was to be made real, it would have anumber of downsides, the price, battery life, it's from Apple, it could be just a larger iPod Touch and that would mean a very closed system. All in all, it won't be a reasonable eBook reader if it was to someday be real.
I think we need to preserve this prediction. I predict the opposite. I predict it will change publishing. But it's going to be announced in about 3 weeks, so it's not a "myth".