I think they are going to release MICRO EPICS of the JLA and they are not teasing Wonder Woman or revisited versions of Batman or Superman.
Why I think this? In the video you can see there is an advice over the hatch which refers to COMPRESSION.
Also you can see that inside the chamber the man takes pieces that apparently have nothing over them, but that thing could be very little.
All these presumptions I make are based over the description of every mini epics figures. Here you have Alien:
https://www.wetanz.com/us/micro-epics-alien-queen
After all, I hope I’m wrong. I would love to see a Batman with tactical suit or normal suit from Weta.
Also I think that their Superman is great. He is the only Superman I know whose tips of he’s feet are not supporting him.