The first Discovery Class ship is scheduled to debut in 2029, with a second following in 2032. The agreement also includes the option for four additional vessels.
Royal Caribbean said the new ship class will introduce a "bold new concept" for cruising which delivers "extraordinary, one-of-a-kind experiences".
While speculation has already begun around the size and capacity of the ships, Royal Caribbean cautioned that many assumptions circulating online are "probably inaccurate".
Michael Bayley, president and chief executive officer at Royal Caribbean International, described the class as a "game changer" for the brand, with full details to be revealed in due course.
