Well... My translation skills aren't that great... but I think this article is saying that Gackt IS indeed going to voice vocaliod.
At least, that's what it seems.
I don't know. The translation came out kind of confusing. Lol. If you can read Japanese better than I can... draw your own conclusions.
but to me, it leans towards saying it is true that Vocaliod will be using Gackt's voice for its upcoming product.
It will be released later this month. Past vocaloids have sold for $100 to $300.