Netflix has confirmed they are working on an option for users to play a random episode from different TV series. There are a few beta tests being done right now on the Android mobile app.
Netflix released the statement to Deadline and a rep confirmed the testing varies in length and region and may not become permanent.
The button appears while the end credits are running and gives you the option of watching a random episode from that series. Shows included in the experiment include The Office, New Girl, Our Planet, and Arrested Development.