Sir von Lego has posted information in the Eurobricks message boards that names five sets that may see release in January 2018, continuing The LEGO Batman Movie theme. The following list combines Sir von Lego’s information with other rumours shared in the thread that seem likely to be accurate.
Justice League Anniversary Party (includes Superman, Hawkman, Superdog)
Egghead’s Food Fight (includes Condiment King)
Harley Quinn’s Cannonball Attack
Bat Dune Buggy (includes Captain Boomerang)
Bat-Space Shuttle (includes three Batman minifigures and two Robin minifigures)
All of the information reported here should be treated with caution until officially confirmed by the LEGO Group.