https://www.vulture.com/article/survivor-50-returning-players-jeff-probst.html#:~:text=The%20show's%20host%20and%20showrunner,heading%20out%20to%20shoot%20next.

The show's host and showrunner Jeff Probst officially announced during a FYC event for the show on April 27, that season 50 will feature all returning players. “Survivor 50 is coming down the corner. The truth is, we really do focus on 47 and 48, that's what we're heading out to shoot next.