In the video example, they used the second lens to "zoom" anywhere seen on the standard camera. I find this hard to believe, because that would mean the zoom lens and sensor would have to move. More likely it would zoom in just the way it does now, without loosing quality, which is a good improvement in itself. If that is the case however, that would be pretty cool.
I agree. Panning the zoomed camera around doesn't sound feasible. Keeping digital zoom on both cameras, each with a different minimum zoom level would be cool. Of course, optical zoom is way better, but size constraints make it fairly unlikely to happen. But having one camera that has a native focal length of X and the second camera having a native focal length of 5X, while retaining the zoom capability for each camera, now that would be awesome!