The filmmaker, who directed and co-wrote both 1984's original "Terminator" and 1991's "Terminator 2: Judgment Day", may do a three-film arc, reported Entertainment Weekly.
"The question is - has the franchise run its course or can it be freshened up? Can it still have new relevance now where so much of our world is catching up to what was science fiction in the first two films? We live in a world of predator drones, and surveillance, and big data, and emergent AI," the filmmaker told News.Com.Au.
"So, I am in discussions with David Ellison, who is the current rights holder globally for the Terminator franchise, and the rights in the US market revert to me under US copyright law in a year-and-a-half, so he and I are talking about what we can do.
Cameron said franchise veteran Arnold Schwarzenegger would be involved in the trilogy "to some extent" but that the plan would be to "pass the baton" to new characters.