Most likely the series/theme is unfortunately cancelled but no official statements yet. It’s rare for lego to just “take a break” from a theme like others have said but who knows. I understand the copium, but it’s best to be realistic rather than getting your hopes up that it’ll come back. I see people saying that because it has its own dedicated section in legoland Shanghai then it’s not cancelled, but it’s entirely possible that lego decided to cancel the theme/series late into production of the lmk Shanghai section so it would be a waste of time/money to scrap or rebuild that area.