This secret says Derpy is out as of S4, which hasn't happened yet. She definitely appears less in season 3, but we have no way of confirming or denying that part yet, so nothing has been proven false. Episodes are not always produced in order and it's probably if she is being sent off that she'd appear one last time in the finale due to the fact the staff liked her too.
As I said, this same source said other things before, which came to pass. I'm not going to get into a citation war with you, but I trust this source, and don't see anything that's contradicted this post yet.
If Derpy shows up in S4 premiere, then it will be suspect. Until then, I believe it true which means that what it says is true: Hasbro wanted Alicorn Twilight. Not others. Lauren certainly has not directly mentioned any plans of her own for Twilight to have become an Alicorn, and I think shed have mentioned it by now. I bought the brony doc and will retract this statement if it turns out she elaborated more on the "successor" thing, but for now I think what we see her is what is fact.
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As I said, this same source said other things before, which came to pass. I'm not going to get into a citation war with you, but I trust this source, and don't see anything that's contradicted this post yet.
If Derpy shows up in S4 premiere, then it will be suspect. Until then, I believe it true which means that what it says is true: Hasbro wanted Alicorn Twilight. Not others. Lauren certainly has not directly mentioned any plans of her own for Twilight to have become an Alicorn, and I think shed have mentioned it by now. I bought the brony doc and will retract this statement if it turns out she elaborated more on the "successor" thing, but for now I think what we see her is what is fact.