I think this was the leak, and I assume this is what the leaker if referring to when he says they have been nerfed, not that they will be nerfed from the Advent Children character model.

Yeah, dunno if that is in-game or concept art, concept I think. I do remember seeing it referred to as a leak last year though. I definitely would be happy with them nerfing them if that was real FF7 Remake concept art of her, those are much too big. She'd be ridiculously top heavy for a fighter with bazongas that massive. Her Advent Children model was perfect, no reason to change her proportions from that model, just update the outfit to match the original game.

Square Enix didn't call it "episodes". That was a mistranslation into English.
In Japanese Square Enix said "multi game series".

Huh? Part 1 and Part 2 with no episodes...?
He just explained that the term "Episode" was supposedly only used to describe full games.
Now all of a sudden he is differentiating between these fgull games (Parts) and "Episodes"...

Sounds like this is not only a made up leak, but the person who made it forgot their own talking points.

Unless this person has some prior credibility of leaking something, this looks like a lazy effort.

To be fair, they needed to be nerfed, at least if that concept art leak of her from last year was real. Her boobs in that art were like 30-40% bigger than they were in Advent Children. 

We live in an era where they made three movies out of the hobbit. So the answer is by adding a lot golf stuff. That also explains the long development time.