Seems Cinemablend.com and TheArnoldFans.com have some fresh "Terminator 4" (or whatever the heck they end up calling it) news. The latter has confirmation that Stan Winston will resume his role as the robot builder on the sequel, whilst Cinema Blend has some interesting plot details about the film :
A scooper tells the site that the character of Kyle Reese will be a central character in the next three films and that his relationship with John Connor will be similar to that of Anakin and Obi-Wan in the "Star Wars" prequels. saying “Just like the Star Wars prequels when it was the relationship between Anakin and Obi Wan that drove the three films, that's the concept for the new Terminator films when its between the relationship of Kyle and John, who is really father and son but with the moral dilemma with John knowing what has to be done in order for him to be born.”
Visit the site for more potential plot points for the film, including a link to TVs "Terminator : Sarah Connor Chronicles".