John Connor will come face to face with the Terminator who spent all that time trying to kill him or save him. Arnold Schwarzenegger has approved his digital image in Terminator Salvation.
It sounds as though Arnie was just being coy when he said he wasn't sure if his digital image would be in T4. According to Variety:
Turns out Schwarzenegger has been secretly working with helmer McG and the effects team to reprise his signature role ... without lifting a finger.
A body-cast mold of Schwarzenegger, created when he first appeared as the muscle-ripped cyborg, provided the basis for a digital-effects version of his famous character. The figure appears in "Terminator Salvation" as a living, breathing actor.
Schwarzenegger viewed the resulting footage and gave his go-ahead just in time for McG to include the footage before the helmer completes his cut of the movie.
Arnie described the scene as one in which resistance fighters infiltrate Skynet's headquarters and come-face-to-face with a roomfull of future Terminators, all of which sound like they have his face. And thanks to the power of never throwing away old molds, he'll look like the young, virile Arnie, not the current statesmanlike version.
Variety, thanks Goldfarb!