Silhouettes for Yuzuki Yukari, along with the other VOCALOIDs by AH-Software, were revealed on a poster on November 6th, 2014, however, at the time, it was unconfirmed what they were for. On November 20th, it was confirmed in the livestream for VOCALOID4 that they all, with the exception of Tohoku Zunko, will be receiving VOCALOID4 voicebanks. Yukari was specifically announced to be receiving an “Onn” voicebank as well as her original voicebank. This new voicebank is intended to sound calmer than her original, similar to the “Whisper” and “Soft” voicebanks produced by other companies.
On December 20th, via a livestream, it was announced that Yukari would receive three V4 voicebanks: her “Onn” (穏) voicebank; a powerful “Lin” (凛) and a natural “Jun” (純) voicebank that is similar to her original V3, would be released. It was also revealed that Yukari’s voicebanks could be purchased together in one package or separately.
On January 28th, 2015, a press release was released and prices were revealed for her individual voicebanks, her complete package, and her starter pack, for both download and boxed versions. It was also mentioned that people who have purchased her VOCALOID3 version or if they are registered as one of AHS’s users, they would receive a discount on her VOCALOID4 update. She will be released on March 18th, 2015.