Now it's been announced that screenwriting analyst Ryan Dixon will write the project with actor Josh Gad, the star of "South Park" creators Matt Stone and Trey Parker's Broadway musical "The Book of Mormon".
The announcement of Gad as a writer of the film puts a different slant on the production, with his previous work including stints on Jon Stewart's "The Daily Show", appearances on hit comedy "Modern Family" and having co-created forthcoming political sit-com "1600 Penn" with former Obama speechwriter Jon Lovett.
It's one of a number of projects for Arnie, following his stint in politics as governor of California.
He's got "The Last Stand" with Johnny Knoxville and Forest Whitaker, "The Tomb" with Sylvester Stallone and "Ten" with Sam Worthington all due out next year.
Related Video: Danny DeVito on "Twins" co-star Arnold Schwarzenegger
Ben Arnold writes for Yahoo! Movies UK & IE