New Marshmello Cosmetics Appear in Fortnite Leak

A second set of Marshmello cosmetics may be coming to Fortnite, based on assets recently data mined from the game's files.
Fortnite data miner FireMonkey claims several Marshmello assets, including an unreleased weapon skin, were updated in Fortnite Update 12.50, indicating Epic Games may plan to add them to the game in the near future. Also among the updated files were the previously released pickaxe and skin.
Marshmello x Fortnite Update:
— FireMonkey • Fortnite Intel ? (@iFireMonkey) May 6, 2020
I was looking more into the files as we saw some Marshmello related stuff was added in v12.50 and I found out multiple different things such the old Weaponskin material for the unreleased Marshmello wrap was updated
Also some skin files got updated pic.twitter.com/aSagmCnQie
New Marshmello Cosmetics Appear in Fortnite Leak
FireMonkey also found reference to a Marshmello bundle, which would likely make all the Marshmello cosmetics available for a single purchase.
Marshmello cosmetics first became available in early 2019, when the DJ performed the first in-Fortnite concert after winning the 2018 E3 Pro-Am Invitational with Tyler "Ninja" Blevins.
Despite hosting several in-game music events in recent weeks, Epic Games has yet to announce plans for a second Marshmello event. It's possible Epic Games plans only to return these cosmetics to the in-game store without a corresponding in-game concert. When players can expect to see the updated cosmetics is unknown.