User blog comment:OtterJiang/V4 - I'm Not Impressed/@comment-68.170.176.241-20150314003852/@comment-53539-20150314085514

Cyber Diva is indeed too new. There are two key points in a vocaloids life where you can see any change in popularity, the first is after 6 months when the "wow shiny" factor is over and you can see how producers have responded. then there is the 1 year mark, where you can see how strong the vocal has been overall in terms of popularity. A wane by the end of the 1st year of a great amount is not a good sign of things to come.

After the first year you just go by year-to-year responses... Most vocaloids will never get updates so they don't tend to have any sudden changes in popularity.