Marketing blah blah
"Depth perception also means it will become possible to use one's hands to control on-screen action in games or with apps built to offer a gestural interface"
Which we already have (from plain old 2d cameras and touch screens) with limited take up. Primarily because it wears you out and isn't very precise; and, as a lazy git, the only time I really want to wave my hands about trying to attract attention and give direction to an uncomprehending other party is either when I want to order more food at the restaurant, or when I'm drowning.