When asked about Arnold's cameo in Terminator Salvation Co-Star Terry Crews tells us that Schwarzenegger will indeed be doing a cameo in the upcomming thrill ride “Terminator Salvation.” “That’s it,” he said. “And so am I.”
It is unknown what type of cameo we will see Arnold doing. Will it be just a shot of the assembly line of Arnold as the T-800, or will Arnold have any lines in the movie? That part is being kept very secret. Crews sts "“I don’t know; I haven’t seen it. They only gave out pages of the script,” Crews remembered. “It was crazy. It was very, very secretive. Believe me - when you see it, that will be the first time I saw it.”
Crews also goes on to say Arnold will have a cameo in Sylvester Stallone's "The Expendables' as well. Crews sts "I am not at liberty to discuss what kind of cameo it is [in ‘The Expendables’], but I know for a fact he wants to be down,”