WOW! I had no idea this was the case. I've found a comment back in 2022 mentioning that K had the scope version of Tron Legacy, so this isn't a recent development. That's still so strange. I checked Apple (iTunes), Fandango (Vudu), Movies Anywhere, and Disney+ and VAR is present on every digital version I could find (including Vudu 3D). K appears to be the only one that has this film in scope.
So, yeah, I don't know what to predict right now. I would say that if K doesn't get the shifting aspect ratios then I'll buy the disc, but I'm already buying the disc... I'd just hate to actually have to watch it.