https://wccftech.com/android-12-now-has-a-new-device-search-api-for-third-party-launchers/

It has only been a month since Google released the Android 12 Developer Preview 2, and it gave us some hints at the features that Google could be adding to the final release. Among these features, there was a new search widget that was for Pixel Launcher; the search feature would let the users search for apps and contacts, settings, and more on their device. It seems like this functionality is not going to be limited to Android 12 on Pixel phones, as we have some evidence suggesting that this feature might be extending to third-party launchers.

The developers responsible for the Niagara launcher managed to find new evidence in the Android 12 preview documentation. The documentation suggests that Google is adding a new device search API in Android 12; this API will allow third-party launchers to have a universal search feature. You can look at the attached tweet below, and as per the tweet, the feature will give third-party launchers "Access to the centralized AppSearch index maintained by the system."