On August 31st, it was officially confirmed that Miku’s V4 update would be a V4X title and a demo was released showcasing a voicebank called “Hatsune Miku Original”. It was also revealed that Miku’s V4X would also contain 2 E.V.E.C. vocals: Soft and Power, though more E.V.E.C. vocals may be planned.
On June 11th, Wat tweeted that Miku Dark’s tuning was finishing up. On the 17th, Wat stated that they were adjusting the “WHISPER” vocal for her which would be different than the “SWEET” one. Wat also tweeted that the new voicebank components have become 4 varieties: ORIGINAL – POWER, SOLID – POWER, SOFT – WHISPER, and DARK – WHISPER. These voicebanks will produce new pronunciation as a result of having different phonetic data from the standard voicebank. Although the recording Japanese voicebanks are 5 varieties, out of those in 4 voicebanks (ORIGINAL, SOLID, SOFT, and DARK) are combined and new pronunciation is contained in them. Wat noted that the standard VoiceColor is also included, however, these are a different system from normal.
On June 26th, 2016, more details regarding Miku V4 English have been announced via Wat’s Twitter. He said that various aspects of Miku’s V4 English voicebank were undergoing adjustments and being checked over. The tone of her V4 English voicebank would be aimed to sound similar to ORIGINAL ~ VIVID. The voicebank’s bias of pronunciation depends, although it would have a bright/clear feeling.
Note:This is japanese, Chinese and english language libraries. EVEC job-plugin included.