EDIT: Alright, I might as well get this out of the way because a lot of people seem to be misinformed (myself previously included, apologies):
1. Apple didn't play a part in the scene changes. They only distribute the episode, they don't have that sort of authority. I feel there is a lot of hate harboured towards Apple for something they weren't responsible for.
2. Derpy's eyes are still crossed throughout the scene; they are just less exaggerated at times, probably for the sake of character readability.
3. The voice change was inevitable; I'm sure some of you know Tabitha originally voiced Derpy thinking she was male. It was an inherent mistake that was bound to be corrected.
So it's really just the absence of Derpy's name. But seeing as how the animators have already stated that she is here to stay, there is no need to be devastated by the changes iTunes made. Please don't go around firing hate and complaints around, things will work out. Thanks.