http://www.mikufan.com/hatsune-miku-v4x-vocaloid-software-officially-launched-new-demo-song-released/#sthash.7L73LnlM.dpbs

http://vocaloid.wikia.com/wiki/Hatsune_Miku_V4_English

So! For those of you who are Vocaloid fans, you all know of the V4X Voice banks that had been released for Megurine Luka, Kagamine Rin and Len, Gackpoid, V Flower, etc. And now, as of August 31st 2016, Hatsune Miku's V4 [Japanese and English] are now available on Crypton Future Media's website as! August 31st also marks the 9th anniversary since Crypton Future Media released Hatsune Miku's original software back in 2007. Now to just wait for Kaito's V4. >:3 More can be read about Miku's new V4X Bank on the given link(s) above.