Producers give a positive but cautious update on Rambo 6, saying it could still happen, under certain conditions. Sylvester Stallone followed up his 1976 Rocky triumph by introducing a second iconic movie character in John Rambo, an embittered and violent Vietnam vet first seen in the 1982 film First Blood. Like Rocky Balboa, Rambo would become a constant in Stallone’s career, returning for further adventures in 1985, 1988 and 2008 before delivering his apparent swan song in 2019’s Rambo: Last Blood.
https://screenrant.com/rambo-6-movie-sequel-update-development/
