The project seems to have had a rough start, or rather a rough start over the past few years. Back in 2017, while all we really knew was that a script existed in some form, Zachary Quinto was quoted as saying, “I was hoping that we would do another, but no There’s no guarantee.” None of the actors seem to know what’s going on with the project, not even Karl Urban, although that’s not terribly shocking given the grand scheme of things. That said, after JJ Abrahms touted “Trek 4” as the Kelvin team’s best story in 2016, the project was reportedly shelved just three years later in 2019 after director SJ Clarkson — who would be the first woman to direct a film in the franchise — has exited.
Around the same time, Chris Hemsworth is said to have turned down Kelvin’s fourth film because he wasn’t too interested in the script (the movie Abrams has boasted is the best of the bunch). In 2021, when this latest iteration of the project with Matt Shakman was announced, the entire cast was completely taken by surprise. They didn’t even know that it was back up and running.
In March 2022, Chris Pine said simply, “I don’t trust anyone, but I’m excited. I love the story. I love ‘Star Trek’.” I love my people. Similarly, Quinto also had high hopes for 2019, although there were no concrete plans (which anyone knew at the time).
https://www.slashfilm.com/1028609/star-trek-4-has-been-removed-from-paramounts-upcoming-release-slate/ Star Trek 4 Has Been Removed From Paramount’s Upcoming Release Vehicle