Originally Posted by
Imnick
Legion is stepping away from the idea of a "pet class". Warlocks are going to be the only class that uses pets over all of their specialisations.
Hunters are gaining a spec where you never use a pet. Death Knights have had one spec with a permanent pet since their introduction, and the ability to summon ghouls even temporarily was phased out of the other specs. Frost Mages have had a permanent pet for almost as long as Death Knights have existed.
Mages aren't a pet class? Frost is a pet spec. This has been true for longer than it has been not true (coming up to 6 years now), and Blizzard are not going to change this.
Your watery buddy is a permanent and iconic part of the spec's identity now, whether you like it or not, and we can see from Blizzard's design decisions on other classes that "has pet/does not have pet" is one of the things they believe is an important factor for differentiating different talent specialisations.