I do hope they can give us a good "conjuror" class.
I loved playing a magician in Everquest, and I miss my elemental pets!
*hugs epic Jibober*
Pet classes in CRPGs and MMOs are direct takes of conjurors and necromancers from D&D etc.
Actually a very interesting, but complicated play style, as you had to account for the vagueries of your pet...back in earlier days of Everquest, "pets" were a damned nuisance, causing a lot of problems due to lousy pathing in the environment, aggroing other creatures needlessly, breasking hypnoitic effects etc. Ick.
Thus only skilled folk were allowed to use them on "raids" (lot of folk fighting an epic creature, lot of complexity that dumb pets could screw up).
The Sha'ir of Al-Quadim is tad different but also falls under a conjuror-style of play, though his "pet" is about getting him spells, than direct combat, IIRC?
One of the fun aspects of a pet class, is that without their pet, they are weak, so you had to take care of your "jibober". The dual apsect is also good for dealing with a couple of tasks at the same time.
I never liked the way 3rd ed made clerical casters the supreme necromancers, as that doesn't jibe with fantasy lore, where arcane-types are the masters of the undead (at least, in creating them, especially new types).