Filly anon is canon?
Given the typical colour combinations of background ponies, this is oddly out of place, and coincidentally(?) similar in both coat and mane colour, and mane style, to Filly anon.
The only part that isn't clear is the cutie mark, it's not a black question mark like filly anon, but it MIGHT be a green question mark. We'll have to wait for higher quality footage of it to see for sure, but I'm doubtful.
Closeenough.jpg
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