So far, the realisation of this has come in the form of user interface patterns. However, this "Direction Sensation Haptic Motion" design provides a way in which a device can provide information to you without requiring you to look at the screen. Of course, audible alerts can already do this, but they are not always practical in noisy environments and can even have safety implications. Take the example of pedestrian navigation, as you feel the point of vibration move across your device in your hand, you could interpret it as direction to follow.
It's not clear whether this directional haptic motion is intended to be beneath the screen of the device, or on the back on the device. It's certain that it is going to be yet another component competing for space in the already cramped smartphones of tomorrow.