Producers of "T4" are reportedly in talks with "T3" director Jonathan Mostow to helm this installment. Mostow is currently supervising the initial draft of the script which is being written by "T3" co-authors John Brancato and Michael Ferris. 

Producers are reportedly in talks with Schwarzenegger to appear in the film. Ah-nold has his hand full at the moment as governor of California, but the filmmakers want him to at least play a small role in the film.  If a deal is struck, a starring role is not likely.  .