The longer I listen to the new Cevio voice, the more I think it's actually Flower. I have seen people say "yeah well but the icon doesn't show Flower". Yeah, but that can be a placeholder especially because the image looks like the Techno Speech mascot. Also, I haven't forgotten Gynoid talking about Flower's voice actor suddenly sounding like Flower naturally when they recorded her talk bank, while Flower's Vocaloid banks were voiceacted. So, Cevio Flower could just be what Flower sounds like if she's not voiceacted which resulted in this way less raspy and muffled and instead smoother sound.
There is also this comment under the sneak peak:
That account belongs to a company that does sell Vocaloids and other music related products and, well, they are followed by both Gynoid's and Flower's twitter account.
So you know... the connection is definitely there. But either way, I'm probably gonna buy this voice even if it turns out as someone else because I LOVE THIS VOICE.
Like on my trio cover of Perfume's Night Flight or even when I started to make her cover in solo mode Tricolor Airlines, it was very nice and nearly ASMR-ish to my ears