Celebrity Edge is the first of four new cruise ships to debut. Edge debuted in December 2018 and will feature several innovations for the cruise industry. Among the "first-at-sea" inventions, a movable deck and cabins with "balcony" spaces that can be transformed from the outside to the inside. Celebrity Edge and its four sister ships will have double passenger capacity of 2,900 people, making them larger than Millennium-class ships, but slightly smaller than Solstice-class ships. All four vessels are under construction at the STX shipyard in France. The second ship, Celebrity Beyond, will debut in the spring of 2020. The two as yet unnamed ships will sail in the fall of 2021 and spring of 2022. Celebrity Edge®, will begin its voyage in December in the Caribbean, and will arrive in the Mediterranean in May 2019.