https://www.cnet.com/news/fortnite-endgame-is-live-take-on-thanos-armed-with-avengers-gear/

If you've got some V-Bucks burning a hole in your virtual pocket, you can also buy a Black Widow outfit and Widow's Pack with a Widow's Bite Pickaxe and Widow's Pirouette Emote. Or you can hold out till early next week, when Epic plans to release a second outfit set. 

Epic teased the Fortnite Endgame tie-in earlier in the week. On Wednesday, the Fornite Twitter account tweeted an image of a character wearing Iron Man's repulsor gloves.