It appears that in today’s maintenance, all the remaining tamed versions of the worgen changed to the normal ‘white worg’ wolf skin.
In addition, I’ve seen several reports that worgen who had been leveled by their hunter have been reset to the level they had when tamed (that is, either level 71 or the hunter’s level – 5). In addition, these wolves seem to have reset to level 68 (or the level of the hunter – 5, whichever is higher).
On the plus side, these wolves are once again proper Wolves, with talent trees and pet skills.
I haven’t yet seen any official Blizzard comment on this, but I’ll keep an eye out.
(My thanks to the legions of people who e-mailed and commented to let me know about this change!)
[Update] After looking at the Armory page for Kaet, my dwarf who tamed Garwal, I believe I have found the answer for the odd de-leveling.
My white worg — the same one who was once Garwal — now displays as a Winterskorn Worg, a level 68 white worg from the same area.
If you view the page source in a browser that handles this well, such as Firefox, you can see the following XML text:
pet catId="23" family="Wolf" familyId="1" icon="ability_hunter_pet_wolf" level="68" name="Cry" npcId="24076" npcName="Winterskorn Worg"
A quick trip out to Howling Fjord found that Garwal remains unable to be tamed (although Beast Lore still doesn’t recognize that fact).
So it looks to me like Blizzard merely replace all the tamed Garwal worgs with Winterskorn Worgs. Fascinating!