New accessibility options about in iOS 7 beta, helping folks of all abilities access and use their iOS devices more effectively and efficiently. The Physical & Motor section of the accessibility options now allow folks with motor and other physical disabilities to use a switch for visual and auditory scanning options, emulate various gestures with assistive touch (introduced in iOS 6), adjust the Home click speed, and, as the headline above notes, set where the incoming calls are sent.
Want to have your incoming calls go automatically to a headset or speaker? It’s relatively easy in iOS 7 beta.