I see, so I have a question is the Volikhar have appeared before, why can only Harkon's family turn into Batman... or Man-Bat from Hell. Is it because he is pure blood? And if so, does that mean other purebloods will have similar enhanced abilities?
Because Betheda just came out and said "Oh, vampires can turn into bats now."
But to be technical, Harkon and his family were turned by Molag Bal, thus they are pureblooded if Molag had a hand in turning them into vampires. Yes, other purebloods would have the same abilities, because the reason we became vampire lords was through Harkon's blood, so it is obvious any pureblooded vampire can do so. Now if they would appear the same as Harkon's alter form, we don't know. Since there are various strains of vampirism and different forms of Lycanthropy, I bet some purebloods can even look like http://3.bp.blogspot.com/-BK-r2kjulUI/TYW9gkPtM2I/AAAAAAAAADM/jDDlz83lbsw/s1600/Van-Helsing_7.jpg It is hard to know, though, for sure.
But not only purebloods are vampire lords. This sired by them can become vampire lords too, as we saw with Serana and Harkon biting the player.