I think a big reason as to why we’re seeing these releases have shorter turnarounds is cause simply put, they weren’t big sellers/lower production units.
We know they employ several factories. I’m just spitballing here, but perhaps, they have a Factory B which is finishing up with Batman production, allowing them to start Joker 2019 run, or they have a dedicated factory that focuses on the smaller runs (JP Joker, Paul, Ron) while others are wrapping up/continuing with Batman, Aragorn, and Superman. Who knows. I am wondering when they’ll post that they’re done with Batman.