Update April 29: Another character has been revealed:

Update April 28: A third character has been added to the teaser image:

Update April 27: Fortnite has added another Superhero to the teaser:

Fortnite has just tweeted a teaser for Season 4 with what appears to be a meteor containing a masked figure, presumably a Superhero:

The Fortnite website has also been updated to feature the new image joined with the heading “BRACE FOR IMPACT!”:

Nothing about the theme has currently been confirmed, we should expect more teasers and information to be released over the coming days as Season 3 nears its end.