Royal Caribbean has filed a trademark with the United States Patent and Trademark Office for "Symphony of the Seas", which seems to confirm the name that has been rumored for the cruise line's fourth Oasis class cruise ship.
Royal Caribbean filed the trademark application on January 21, 2017 and it is currently active.
Royal Caribbean has not officially confirmed the name of its fourth Oasis class cruise ship, which is due out in Spring 2018. There have been a few different convincing rumors this month that seem to point to the name of the ship being Symphony of the Seas, including a construction site photo taken of the ship's name being prepared.