Give this post a read:

http://moviesblog.mtv.com/2008/08/20/terminator-salvation-secrets-lie-within-films-title-says-mcg/#more-3866

The word “Salvation” means protect and to save. So John Connor obviously have to save someone in the 4th Terminator flick.

Come on McG, stop teasing us that Arnold is gonna be in it ’cause we all know he’s in it anyways. We know that entire post is reffering to Arnold’s Terminator character all the way. They aren’t fooling us!

Kev