APPLE INSIDER
Apple is investigating replacing the regular MacBook Pro trackpad with a virtual one that can dynamically shrink, grow, or change position as needed.
Mockup of an extra-wide trackpad.The current MacBook Pro trackpad is already far removed from the original versions which physically moved when clicked. Now Apple is looking to replace even that glass surface and its haptic touch, with an entirely virtual trackpad — and making it backlit.
Source: APPLE INSIDER