The official Fortnite account replied to a Birds of Prey tweet, saying that they’d see Harley soon. Fortnite has already done two Marvel events, one for each of the last two Avengers movies, complete with skins. Namely because the potential for skins is extremely high, and skins that will sell very, very well, most likely. Most of the other members of Harley’s crew don’t really have iconic costumes in Birds of Prey. Birds of Prey is out in just over two weeks, so I would expect the event and these skins to show up some time before that.

Source: Forbes January 24, 2020 14:48 UTC