A few CG tweaks have been made to the upcoming 3D version.
In anticipation for the August 25 theatrical release of Terminator 2: Judgement Day 3D, ScreenRant has put together a list of slight alterations made to the film. Don't worry, the guns haven't been turned into walkie-talkies, but director James Cameron has taken the opportunity to tweak a few shots for the 4K remaster, typically in the service of fixing some minor production gaffes or continuity issues.
A couple changes occur during the truck chase scene early on in the film. When the T-1000 drives the truck into the storm drain, the original cut featured a continuity issue where the truck's windshield busted off but then returned to being in place later in the scene. In the new version, Cameron has used digital tools to keep the windshield intact when the truck lands.
Likewise, Schwarzenegger's face has been seamlessly pasted over his stunt double's in a few shots where it used to be clear it wasn't really Arnold. In addition, wires connected to the motorcycle when it enters the drain have been digitally erased and, in the scene where the T-1000 arrives in the past, Robert Patrick's... uh... balls... have also been covered up. Finally, Cameron has adjusted the film's color timing a bit as well, and it's possible that audiences might spot other minor tweaks here and there when they get a chance to comb over the new 4K Blu-ray.
Though revisions to classic flicks tend to be unnecessary at best and downright harmful at worst, these small changes are so minor that I doubt many fans will begrudge Cameron for wanting to fix up a few of his shots.
Terminator 2: Judgement Day 3D opens in theaters on August 25. Likewise, a 2D version of the movie will hit Ultra HD Blu-ray on October 3.