yeah, ever since the first release of vocaloid (and songs made with it), the voices insterted in vocaloid have gotten more expanded and such; they were given looks, even personalities, basically made into actual (anime) characters .
Though there's no real vocaloid anime .
Black★Rock Shooter looks a lot like Hatsune Miku though, which is why she's associated with vocaloid and stuff so much .. People are saying Black★Rock Shooter is the closest they'll ever get to a real vocaloid anime .
That's about all I can tell you about all of this.. XD;