Preview Apps are Sumo Logic Apps that are currently under development, but are not yet released or officially supported. They appear in the Library under the Preview tab. You can install and use Preview Apps to test how well their use cases work for you, and provide feedback to Sumo Logic.
Preview Apps that have the highest customer adoption rate will become the first in the queue to be adopted and moved to the Apps tab, where they will be officially supported by Sumo Logic.
As Preview Apps are iterated, updated, and finally released, you will need to reinstall the App to get the latest version.
Preview App Support in the Sumo Logic Community