APPLE INSIDER
After initially launching to beta users, Plex has now rolled out integration with the Apple TV app to all users.
Plex for Apple TVThe new feature applies to Plex’s free ad-supported video-on-demand library. When a user starts playing a title and doesn’t finish, it will now show in the Apple TV “Up Next” queue alongside content from other providers such as Hulu, HBO, Amazon Prime Video, and others.
Source: APPLE INSIDER