The trailer of Harry Potter 20th Anniversary: Return to Hogwarts was released on December 20. It sees the stars of the film series take up a nostalgic journey. They visit Platform 9 and 3/4, they sit down for a meal at the Great Hall. This nostalgic trip turns emotional for the actors who recall the role that the film franchise played in their lives and in their careers. 

Emma Watson says in the trailer, "It feels like no time has passed -- and loads of time has passed." Daniel Radcliffe on the other hand confessed that what scared him was "the implication that the most meaningful thing in our life was done." The trailer ends with Rupert Grint saying, "We are family, we will always be a part of each other's life." 

The reunion features stars the lead actors Radcliffe, Watson, and Grint. In addition, it will also see the appearance of Helena Bonham Carter, Robbie Coltrane, Ralph Fiennes, Jason Isaacs, Gary Oldman, Tom Felton, James Phelps, Oliver Phelps, Mark Williams, Bonnie Wright, Alfred Enoch, Ian Hart, Toby Jones, Matthew Lewis, Evanna Lynch, producer David Heyman and filmmakers Chris Columbus, Alfonso Cuarón, Mike Newell and David Yates. 

Harry Potter 20th Anniversary: Return to Hogwarts is slated to be released on Amazon Prime Video in India on January 1, 2022. The special is executive produced by Casey Patterson of Casey Patterson Entertainment (A West Wing Special to Benefit When We All Vote) and Pulse Films (Beastie Boys Story).