Did Thomas said this about Lady Chaos or it was speculation from the fans? (Spoiler)

I red a post a few months ago (I no longer can find the post) about how Thomas Astruc said something along the lines "Everything will change after the episode Lady Chaos". I can't find the post nor the tweet.

Can someone confirm if this is true or just someone's speculation? Because if Thomas really said that, it means Amelie getting akumatized might be big big deal actually.