With Avatar: Fire and Ash opening this weekend, James Cameron is preparing to tun his attention to his other juggernaut franchise: The Terminator.

“Once the dust clears on Avatar in a couple of months, I’m going to really plunge into that,” Cameron tells THR. “There are a lot of narrative problems to solve. The biggest is, how do I stay enough ahead of what’s really happening to make it science fiction?”

Cameron also reveals that the seventh Terminator film will not star Arnold Schwarzenegger.

“I can safely say...