When Apple first released the iPod it was revolutionary. The following iterations quickly improved and expanded upon the original concept. But after a few releases the need to buy a new iPod diminished with every release. Yes the new ones were smaller/lighter/higher capacity/new colours/.. but the core experience remained the same: a 1000x songs/photos/movies in your pocket with enough battery to last days.
The original MacBook Air was revolutionary thin. The last release is also amazingly thin. In between these models Apple improved speed, battery life, displays. But do I feel the need to get a new MacBook air when Apple releases a new one? Not every time. I buy a new one when the old one can't hold up anymore. The MacBook went from revolutionary to iterative to mere speed bumps. This isn't a bad thing. At a certain time a device is just finished. It's as close to the idea of a device as it could ever be. What follows are small improvements to keep up with the times.
I think that with the iPad Apple reached that moment last year. The iPad Air and iPad mini were (almost) identical devices. Amazing battery life, nice displays, thin, light and fast.
This year's iPads are speed bumps with a few new features. Nothing groundbreaking, just logical evolutions of the idea of a tablet.
People, and apparently Apple expect them to be revolutionary. But they aren't. The revolution was these last years. Now it's time to start building a government: improve the software and the quality of life on an iPad.
I'm not feeling the need to buy a new iPad, but I'm thrilled to try out iOS 8.1 and all the bug fixes included.
Apple should change it's story. The iPad as a hardware device is done. the iPad as a software platform is in its infancy.
And then we have the iPhone. The idea of a perfect mobile computer is there. But there's still one piece of the idea missing for it to be finished: battery life. Once they can solve that problem, that platform too will be a finished idea.