Not what we "consider" the "early form", it is actually the original Nicene Creed as adopted by the Councils. That's just a fact, Harley. What the Latin Church and virtually all Protestants say, because you got it from the Latin Church, is a later version designed to address Arianism. For centuries it was condemned but eventually the Franks forced its acceptance on the Western Church. The Pope today, of course, uses the original form when praying with Orthodox hierarchs and people. As I understand it, the original Greek form is also used by the Latin Church for catechesis.
I'm just quoting the Greek Orthodox's website.