Yet too see an official post if new pets are due in 6.2 - But from ptr it appears that the Iron Warwolf is to be found at lvl 100 and tamable. Patch is very fresh and alot due to change, but this is a wanted pet I reckon many of us hope will go live.
(Can't link it seems, but the hunter blog, eyesofthebeast.com got a post about his findings)