クリプトン・フューチャー・メディア
In October 2014, the first product confirmed for the Vocaloid 4 engine was the English vocal Ruby, whose release was delayed so she could be released on the newer engine. Soon afterwards, Wat of Crypton Future Media reacted to the news in regards to the upcoming "new Luka vocal". In 2015, several V4 versions of Vocaloids were released. The Vocaloid 5 engine was then announced soon afterwards.