Microsoft today released Windows 11 Preview Build 23424 to Dev Channel Insiders. This new build comes with the preview of revamped widgets board experience with a larger canvas (3-columns if supported by the device) and new zones to provide users quick access to glanceable widgets from their apps and services.
In this Windows 11 preview build, Microsoft is also enabling Content Adaptive Brightness Control (CABC) feature to run on devices such as laptops and 2-in-1’s that are plugged into a charger, as well as on desktop PCs.
CABC will dim or brighten areas of a display or monitor based on the content being displayed with the goal of striking a balance between reduced power consumption with visual experience to save battery life.
You can change this feature via Settings > System > Display under “Brightness & color” and through a drop-down menu with 3 options: Off, Always, and “On Battery Only”. On desktop PCs, this is off by default.