Concept videos usually aren't realistic, or even preferable, since they have to convey what the technology can do simply through video. In reality, it'd probably be more discrete and easier to use. The advantage concept videos have is that they simply demonstrate possible uses of possible technology.

That triggers a few questions if you're creative: Is this possible to achieve with today's technology? What problems would things demonstrated in the video solve? Is it possible to solve the same problems, or sub-problems, with today's technology? Can I develop this concept further, take it in a more useful/fun/futuristic direction?

They haven't introduced anything new, they've taken ideas that have been around forever and made some high-quality versions of them. Big deal. How excited can you get about that?

Meanwhile, Microsoft gives us things like Kinect which I find much, much more compelling than anything Apple's ever come up with.