They tried with one thing before it get massive: The Newton... and we all know the result.

And I'm not so sure about the tablet, they fill that market with the iPhone/Touch and anyway: the best is to wait to see what happens to the Kindle DX.

Besides that, from the language used, is almost as they are predicting the weather: they have not 'inside information' or something like that, they just expect that Apple could launch that product, and If that happens, then it maybe comply with the specifications they said. Everything will happen only if the low pressure front is not disipated by the North-East winds.