From B&H:
Apple has updated the MacBook Air and the entry-level 13" MacBook Pro. The MacBook Air gets a True Tone display, while the entry-level 13" MacBook Pro gets fully kitted out with an 8th-Gen Intel® Core™ quad-core processor, Touch Bar, True Tone, and more. The MacBook Air now has True Tone on its Retina Display. True Tone automatically adjusts the white balance to the color temperature of the light around you, providing a much more natural viewing experience. Learn more here.