Apple Inc. on Thursday unveils a multitasking operating system iPhone OS 4 for its iPhone, iPod Touch and iPad devices. "iPhone OS 4 is the fourth major release of the world's most advanced mobile ...

TL;DR: A viral clip shows a custom "3D OS" that maps apps to five faces of a cube viewed on a laptop; it uses rotation and apparent head-tracking to fake spatial multitasking but heavily taxes RAM and ...