They really changed the whole shot composition and where Mickey stands among other things. He doesn't interact with Donald and Donald isn't the first person to notice Sora/Kairi anymore. It has a happier vibe and the way the crowd looks out to the Paopu tree island is entirely changed. I don't honestly know what the meaning of the change is lol.
I just compared it side by side and you're right!
Also noticed adjustments to depth-of-field effects here and there, as well as different facial animations in places.
Example:
When Axel, Roxas and Xion are at the clock tower, there are more open-mouthed smiles from Xion and Roxas where before their mouths were closed.