Board Thread:Off-Topic Discussion/@comment-28574980-20180122202029/@comment-53539-20180329085309

Out of those two, Kaito is being worked on but since he is a V3 he isn't in danger... V2 has been retired. Of the two, only Piko would be worth the update. Unless its for V5, Kaito's update wouldn't be adding much, whereas Piko's would see a leap in quality.

Otherwise Piko has several replacements within Vocaloid itself right now so loosing him doesn't really leave much of a hole... Kaito has only one or two.