A curious line was uttered by the seemingly deceased Emperor Palpatine, who went on to state “at last, the work of generations is complete. The great error is corrected. The day of victory is at hand. The day of revenge. The day of the Sith!” The craziest part of that line is how it has connections to a message included within The Rise of Skywalker’s opening crawl: “The dead speak! The galaxy has heard a mysterious broadcast, a threat of REVENGE in the sinister voice of the late EMPEROR PALPATINE.”
However, that mysterious broadcast was never heard within the film itself and was instead debuted during the Fortnite x Star Wars crossover event. With such an integral portion of story exposition appearing for the very first time outside of the Star Wars films and inside of a wholly separate video game, it’s easy to see why Fortnite fans think it’s now considered Star Wars canon.
It’s certainly a possibility.