When Bo Peep gets taken away, the car driven by the new owner has the license plate RMRF97. it's a sort of meta-Toy Story 2 (1999) reference. It's an often repeated story that the second Toy Story film was nearly entirely lost when the main file was accidentally deleted from the main Pixar servers. This license plate references the computer command which nearly erased the movie. the Unix command "rm", with "rm -rf" standing for removing all files recursively in a given directory and without confirmation. Thankfully, a pregnant employee had a backup copy of the film on her home computer, which had to be gently driven to Pixar HQ in order to save the movie.
Tim Allen on The Tonight Show, "According to the scuttlebutt, the writer that's doing it wrote one of the better ones and said, 'If I didn't get this right, I wouldn't do it.' It could be a very, very interesting way to reunite it." He didn't specify who the writer is.
This is the second theatrically released fifthquel to an animated film franchise that doesn't include spinoffs, after Ice Age: Collision Course (2016).
The release date was announced on April 5th, 2024 to be June 19th, 2026.