Apple says the touchscreen MacBook Pro has a "newly designed hinge" for stability and an "enhanced six-speaker" system; the 14" model is 3lb and the 16" is 4lb (Jay Peters/The Verge)

Apple has introduced a touchscreen MacBook Pro featuring a newly designed hinge for stability and an enhanced six-speaker system. The 14" model weighs 3lb and the 16" model weighs 4lb, marking a shift from the company's previous resistance to touchscreen laptops.