No, it's 'shopped.
The Red Arcane was actually rumored early because of someone (who shall remain nameless but he knows who he is!) 'shopping it as a practical joke, along with a red version of Black Ghost. Made it look like a banner ad. I think we still have it around here somewhere. It wasn't 'til much later that E revealed they did make a Red Arcane uncut that never went to production, then after that announced they would produce it as a premium deck. It was about time, since they're pretty close to out of ALL of their other promo decks.
This "mint" thing... Nah. First of all, they'd probably call it "Emerald." Second, why would it be leaked in China rather than here? Third, E doesn't have a single Chinese employee, and they're going to hire one as a model for a one-off video shoot, posted to a Chinese website in Chinese, when all this time they've only ever posted to their own site or YouTube? Fourth, they're going to make a new deck with their OLD "E" LOGO instead of the NEW FIREBIRD LOGO they use on their new decks, under the name Ellusionist Playing Card Co.? If I can't say, "sure, why not?" to a single one of these statements/questions, something's rotten in Guangzhou...