Apple has quietly updated the specifications of the 2018 MacBook Air, updating the screen brightness. The change brings the display brightness up from 300 nits to 400 nits. The change did not require any hardware changes to the device and is attributed to updates found in macOS Mojave 10.14.4. That update was released on March 25, 2019.
One of the criticisms of the new MacBook Air was the screen brightness with many finding that it was not bright enough when the display settings were set to maximum brightness. When macOS Mojave 10.14.4 was released last month, it did indicate that a fix for the brightness of the Air was in the update. At the time, details were not specific to what exactly had been addressed or changed.
The good news is that, with this being a software update, anyone with a 2018 MacBook Air will benefit. No hardware changes to the laptop have happened and this is purely a software adjustment to tweak the brightness of the display. If you have an Air and have not updated to 10.14.4, it is time to do so. Especially for those readers who found the display to be too dim.
The 2018 Air was announced back in October 2018 and was met with overall positive reviews, especially given that the lineup had not seen an update in four years prior.
Apple officially has not commented on the update but has changed the product specifications online to indicate the new 400 nits brightness.