He already had Arnold Schwarzenegger on board and not The Hollywood Reporter is reporting he has Linda Hamilton back.
The character was killed off in Terminator 3: Rise of the Machines which Cameron had nothing to do with, so to include the character and the original actress means the new trilogy will ignore all the films past part 2.
Terminator Genisys had the character but due to some time shift storyline it was a younger version and was played by Emilia Clarke.
The series is shaping up nicely, and it will be interesting to see how the story comes together if it is based 30 years after the events of Terminator part 2.
Exclusive: Linda Hamilton set to return to #Terminator franchise, James Cameron and @Schwarzenegger also involved https://t.co/qV3kV1cGZw pic.twitter.com/c0OB4kxzng
— Hollywood Reporter (@THR) September 20, 2017