The only vocaloids that will not be upgraded to Vocaloid 3 are the Vocaloid 1 generation vocaloids. This is because Yamaha has decided to no longer support Vocaloid 1 and is beginning to phase out the oldest engine. However MEIKO and KAITO will be upgraded to Vocaloid 3 due to their append banks that will be released. The only vocaloids that will be official retired and no longer available for purchase after the Vocaloid 1 engine is no longer available for sell will be the engloids LE♂N, L♀LA, and MIRIAM. This is because Zero-G has announced that they see no reason to keep the old banks available and that they would rather focus on newer products and developing V3 vocaloids. However, they will update these if there is demand.