Facebook has been rolling out stand alone apps for individual features like Messenger and Rooms in an effort to simplify each experience. Now, Facebook has announced that Facebook Groups will also be a secondary app.
The new app will let you view and interact with your Groups in its own app. You will still be able to access your Groups via the Facebook app by clicking on More > Groups, but with this new standalone app you will be able to view your Groups in a more simplified manner. Once you open a Group in the app you will be able to view everything the Group posts about in a Newsfeed-style way, which makes the viewing experience as well as interaction easier and more enjoyable.
There will also be a new Discover button which will allow you to browse through suggested Groups based on your interests.