Board Thread:Chinese VOCALOID discussion/@comment-7882956-20171017153800/@comment-7882956-20171018010249

I think I found what they were talking about.

It seems that someone was asking (or assumed, idk) that because Yuecheng is a b2b vocal, they were asking if this is the debut date (kinda like a "release date", but not really).

Yuecheng's bilibili account responded, seemingly misunderstanding the question: Yes, this is b2b, you're not wrong.

Question: "Is there not going to be commercial products sold?"

Yuecheng's bilibili: "We will wait and see. There will be a new way" (I'm not sure what that really means but okay)

Or something along these lines. I'm checking up with another native to see what she thinks. Otherwise, I never found a statement (seeing that the original poster seemed to have drawn conclusions that Yuecheng was a private vocal to begin with somehow) about Yuecheng's original intent was to be a private vocal.