No they havent. MM as a spec has been pet free since legion
Even on the official website
BM
“A master of the wild who can tame a wide variety of beasts to assist them in combat. Preferred Weapon: Bow, Crossbow, Gun”
SV
“An adaptive ranger who favors using explosives, animal venom, and coordinated attacks with their bonded beast. Preferred Weapon: Polearm, Staff”
MM
“A master sharpshooter who excels in bringing down enemies from afar. Preferred Weapon: Bow, Crossbow, Gun”
Even MM doesnt mention a pet at all.
Again MM since Legion has been designed as a spec with no pet.