It's called Rumors. We don't actually know anything.
- Ask one contact at Apple how many of <product> will sell and they are the half full guy: "up to about 10 Million units."
- Ask the half-empty contact: "lucky if we get 500K"
- As the full glass guy: "bigger than iPhone"
- As the empty glass guy: "Ringo isn't even the best drummer in the Beatles."

All are Apple guys and all are offering guesses. All can be quoted in rumor stories. And all may prove to be right or wrong or something in between. That's rumors!
You also have article writers which sometimes have their own bent on some topic. If they are half full about something, they may be attracted to details that support their own view. If they are half empty, the same. For example, within any of these Goggle posts, we seem to have extremists and not much in the middle. Promote any poster to contributing author and you'll likely get a very positive or very negative Goggles article with carefully selected "facts" to support their own view.
I'm in the positive camp about this concept. But if I wished, I could write a blistering pile of doom about it too. Both extremes are easy to support with our own wild guesses because it's one big pile of imagination vapor right now. None of us know what it is, nor if it is really $3K, nor what it looks like, etc. So we are just imagining the best or worst without many seeming to have any room in between the extremes.
Soon Apple will take the stage and reveal whatever it actually is, whatever it actually costs, etc. Vapor will become much more tangible. Opinions will then evolve with 'reality' being revealed. Some may do as has been done in many pre-release product threads before: enormous flip flops of opinion. Others may amp up their existing opinions even harder. Until we know what it actually is, we're all imagining different vapor and then faulting each other for not having the exact same imagination as our own.