3 is supposedly gunna have a Korean voice bank, whereas the other ones were Japanese. The VOCALOID people said that they were going to make the worlds most realistic vocal sythesizer, I personally thought it wouldn't be much of an upgrade, sure the other VOCALOIDs were okay, but I didn't think it could be realistic. For those of you unfamiliar with the sounds of VOCALOID it sounds like this:
Oh yeah, Japanese electronic pop songs about debauchery and murder. Sure, it doesn't sound super real, but it isn't bad. But now we get the Korean equivalent with this demo clip leak by those VOCALOID dudes:
Yeah... that sounds pretty real. I like it. It's so real!!!!