Tamed him today (8:20 AM server time) on Zeth'kur around 65.25. Yesteray I met player who claimed, that on this patch, he spawns only on one place (33.25), but obviously he was kidding. I had problem with Tame Beast when used on Lupos - It said Invalid target, so I had to log off, delete WDB folder and log in. As combat log says, he deals shadow damage on auto attack and normal damage on bite (he cames with Bite rank 3). To fully use his potential, tame also some wolf with Furious Howl rank 2, learn it, learn it Lupos an make macro for Multishot + Furious howl since they share 10s cooldown.
There was an advice that mages can make taming easier when sheep the wolf. One mage came to help me, but he said he can't polymorph him, don't know why. Use Npcscan addon, it will alarm you, when he spawns somewhere near + target macro with Hunter's mark to find him faster. Stalk him on morning hours, when server population is low = less hunters trying to find him.