As of now, there has been no official announcement regarding "Monsters, Inc. 3." While both Pixar and Disney have expressed interest in expanding the "Monsters" franchise, including the successful prequel "Monsters University" and the Disney+ series "Monsters at Work," a third film has not yet been confirmed. Fans remain hopeful for a sequel, but for the latest updates, it's best to keep an eye on official announcements from Pixar.

"Monsters, Inc." is generally considered appropriate for children and family viewing. The film is rated G (General Audience) and contains no offensive content. It features themes of friendship, bravery, and the importance of laughter, all presented in a humorous and engaging way. While some scenes may be slightly scary for very young viewers, the overall tone is light-hearted and suitable for audiences of all ages. Parents often find it a good choice for family movie nights.

There are two main films in the "Monsters, Inc." franchise: "Monsters, Inc." (2001) and its prequel, "Monsters University" (2013). The first film follows monsters Sulley and Mike as they work in a factory that generates energy from children's screams, while the prequel explores their college days and the beginnings of their friendship. In addition to these films, there are a few short films and a television series titled "Monsters at Work," which continues the story after the events of the original movie.

"Monsters, Inc. 2" was initially in development but ultimately canceled due to various factors, including shifts in creative direction and the focus on other projects within Pixar. The studio decided to prioritize original content and sequels that aligned more closely with their evolving storytelling vision. Instead of a direct sequel, Pixar later released "Monsters University" in 2013, which serves as a prequel, exploring the backstory of characters Mike and Sulley during their college years.