Even though Tron: Legacy received lukewarm critic reviews for its storyline and character development, the film was a huge success at the global box office. Tron: Legacy was a sequel to the 1982 cult classic film Tron, and was directed by Joseph Kosinski, based on a screenplay from Adam Horowitz and Edward Kitsis. The director of Tron, Steven Lisberger, served as producer on Tron: Legacy. The film grossed $410 million against a budget of $150 million, and was also nominated for an Oscar for Best Sound Editing at the 83rd Academy Awards. Tron: Legacy, like it predecessor, has since become a cult classic.

Tron 3- What we know so far
The sequel to Tron: Legacy was first announced in 2010, prior to the release of the film. The sequel has had a tumultous run since then. Disney first greenlit the sequel in March, 2015, and then scrapped it a couple months later. However, in 2017, Tron: Legacy director stated in an interview that the sequel was not scrapped, but was rather in a “cryogenic sleep”.
More reports later suggested that Jared Leto has been cast to play a new character in the sequel. The character he would be playing was called Ares.

In June 2020, president of Walt Disney Studios of Music and Soundtracks, Mitchell Leib, confirmed that a third Tron film was actively in development at Disney.
“We’ve got a great script, I mean a really phenomenal script that we’re very excited about. Whereas the timing wasn’t right to have done it years ago, I think we feel like the timing is right now, and I feel like we’ve learned a lot of lessons from that last movie.”
In August, 2020, it was reported that Garth Davis has been hired to direct the sequel to Tron: Legacy. He will be working on a screenplay written by Jesse Wigutow. The sequel could see the cast of Legacy return. Jared Leto also confirmed his involvement in the film on Twitter.
As of right now, no official release date has been set for the untitled sequel of Tron: Legacy.