Continuing with the 2019 set image reveals, there are now some official images of the LEGO DC Batman 2019 sets. Like with the Spider-Man sets, the theme has been shorten to just LEGO Batman, at least according to the boxes.
Batsub and the Underwater Crash (76116)
Includes Ocean Master, Aquaman, Batman
Batman Mech vs. Poison Ivy Mech (76117)
Includes Poison Ivy, Firefly, The Flash, Batman