NFO doesnt really say if there are any differences between versions. I'm guessing they fixed Mario's moustache from disappearing on the standing still frame of his animation. When he's big, that scan line (as well as every 4 horizontal lines if I remember correctly) was cut off to fit the GBA screen in the original Famicom Mini version. They fixed it by the time of the NES Classic version. Know if there there any other differences or new features?