Beginning in March of 2020, Microsoft will move forward with an enhancement to its gradual rollout process, sometimes referred to as gradual rollout, whereby an automatic driver—upon approval for release via Windows Update—may be first rolled out to an initial set of the eligible population before progressing to the general retail Windows population.

The initial set is programmatically selected and is typically both highly active and representative of targeted clusters of hardware ID (HWID) and computer hardware ID (CHID) combinations for the particular driver. The initial rollout targets highly active devices as there is higher chance of getting diagnostic data from these devices, which enables early failure detection. It targets specific clusters of HWID/CHID combinations so that the driver’s quality can be evaluated in a way that evenly represents the total device population.

Rolling out a driver to this initial set of its eligible population may take up to eight calendar days. However, the overall monitoring phase for drivers during the intelligent driver rollout process will continue to be up to 30 days.

For more details on driver gradual rollout, see program details is available on Hardware Dev Center.

Source: https://techcommunity.microsoft.com/...t/ba-p/1218643