The One Piece Fan Letter special will instead air next Sunday, followed by a special edited version of the Fish-Man Island arc starting on October 27.
The second live-action season of One Piece is currently in development, as is The One Piece remake anime at Wit Studio for Netflix.
Update: The live-streamed “One Piece News #1” special confirmed that the television anime is changing what will air in its regular Sunday timeslot until March 2025 to “recharge.”
Crunchyroll confirmed in a press release on Sunday that it will stream both One Piece Fan Letter and One Piece Log: Fish-Man Island Saga.