Heck, two years.
People here are of course correct to say it needs to be more affordable to be more widely adopted, but that's also a two-year-old remark.
When it was announced, I'd all but assumed it would be offered as some kind of advance product just for developers, and the weirdest part of the rollout was that it was actually supposed to be a product alongside the Mac, iPhone, and friends. I think I blinked at the Web site a number of times. "They're just selling this?"
To this point, I don't see it would have made much difference which of those two routes they took.
The great benefit is that the operating system's fundamentals were evidently solid from the start, and the features and flexibility have really developed in two years. When (if? when?) the time comes for affordability, lightweightness, and mass adoption, the "beta" or "1.0" feeling of the thing is going to be so well shaken-off.
(So, yes. Still "getting ready" for the supposed new age.)