Fortnite has now announced that Chapter 2 of the game will end on December 4th.
It will all happen with the event The End which will start at 22:00 the same day and where the antagonist The Cube Queen will go on Fortnite Island. Groups of up to 16 players will be able to participate in The End together.
Fortnite Chapter 2 started in October 2019 after Chapter 1 ended with the former Fortnite island being swallowed by a black hole. Fortnite was then offline for several days before the new island appeared.