Although the tweet doesn't reveal much, dedicated fans were able to dig through the game's files and give others a good look at what's to come during this crossover event.
EDM and Fortnite have formed a beautiful relationship over the last year or so. In addition to Marshmello and Ninja's contributions to both mediums, RL Grime, Alison Wonderland, Dillon Francis, and more have all participated in events related to the game. RL Grime has even achieved competitive gaming greatness with two major tournament wins, beating out countless celebrities and pro gamers alike.
Fortnite has not announced the official release time for the event but has confirmed that it will come out today. (August 22nd)
H/T: Fortnite Insider