Fortnite's latest patch released earlier this morning and people quickly got to work on datamining the files. Hidden among all of the new tweaks are references to a potential Batman crossover event. Happening this weekend (just in time for Batman Day), players will be able to don the cape and cowl and unlock weapon skins themed around DC Comics' most famous hero. So much for surprises, I guess.
There are numerous Batman-themed skins along with an "Explosive Batarang" and "Batman Grapnel Gun." Tilted Town will be transformed into Gotham City and there will be numerous challenges focusing on lighting up the Bat-Signal and capturing the Joker. I imagine this will be similar to the Thanos event and players will transform into the Joker to torment opponents.
Here are the challenges found within the files: