Ray Fisher and Ezra Miller have their credit order swapped from the theatrical Justice League (2017). In the theatrical version, Miller was billed fifth and Fisher was billed seventh; this version bills Fisher fifth and Miller seventh.
At the end of the DC Comics logo, Doomsday's orange lightning bolts appear behind it, which leads into the opening with Doomsday and Superman's battle from Batman v Superman: Dawn of Justice (2016).