From Game Spot:
The crossover frenzy that has been this season of Fortnite appears to be continuing with another legendary gaming franchise. Capcom’s Street Fighter looks like it will be the next to join the game. If you care to look for yourself, the tease is live in battle royale right now.
On Twitter, Fortnite leaker ShiinaBR shared images they obtained that show off what appears inside the next portal. The previous one showed Tron imagery prior to an official announcement, and this one looks like Suzaka Castle. If the level sounds familiar, it may be because in addition to several Street Fighter games, it’s also Ryu’s signature state in Super Smash Bros. Ultimate.