Yeah, Disney's never tried to alter their movies SE style. The Tron blu-Ray has one curious change where they added a tron-like border at the top and bottom of the frame in this one stationary shot of the actors. In a screenshot comparison with an older hd broadcast, the framing of all the shots in the movie lines up perfectly with the blu-Ray, but in that one shot the broadcast looks slightly zoomed-in. A couple years ago I saw a 70mm print of Tron that would've been made in the late 90's / early 00's and I actually noticed a splicing jump at the beginning of that shot.

My guess is there was something visible at the edges of the frame and they optically zoomed in just for that one shot. For the blu-Ray, they must've decided for whatever reason to just hide it with these polygon shapes.