Finished my scene-by-scene comparison, and only found a few more paint jobs.
With several bright effects, it was hard to tell whether the difference was in the material or in the TV reception. This one seemed pretty clear, though.
I guess they wanted to make this scene look a bit more realistic.
And the one edit they did for the right reason: fixing a continuity error.
In the original, we could hear her, but we couldn't see her. She's been put in in the place where later views of the scene (from another angle) show her.
And on another note, 4Kids has just lost the right to use "lip flap" as a catch-all excuse for dialogue changes. They've demonstrated that when they want to, they can change the lip flap. We don't see Satoshi's teeth once in this scene.