These voicebanks are an updated Japanese voicebank which was recorded using VCV samples and for the first time, Maro will soon be able to sing in English which was recorded using Arpabet samples (Arpasing).
As this is my first time to develop such voicebanks, it will take some time before it reaches beta development. Luckily, the UTAU community has plenty of resources available which are helpful in learning how create new voicebanks (as well as re-learning those what I had known the last time I used UTAU).
In the meantime, there may also be a possibly that I will introduce updates on the currently available Japanese CV voicebank if need be.
As always, stay tuned for updates!