It’s frustrating that I’ve been waiting for a long time, but only the demo songs from years ago and some videos have been released and still haven’t been released 
None of the “Plus” voices will be released. They were an experimental proof-of-concept and were eventually deemed not suitable for sale.
Quadimension’s current projects involve proper AI versions of their voices, in cases where the voice providers are available and willing to work on the project.
So far, Yongye (the AI successor to Stardust Minus) has been released, and Chiyu AI has been said to be in development.
There has been no confirmation for any other Quadimension voice.
「いいね！」 1
It’s such a shame to cancel the release…