There are new models for the animal companions currently rolling on PTS (Public Test Shards). The new pets look amazing. Beastmaster's pets, Ranger's pets and the Druid faeries - they're all updated to neat, armored models, different from the previous enemy-skin copy+paste.
Beastmaster Warrior – Greater Primal Companion
There is no current info on when they'll be going live, probably Trion is still working on the design. Check the full story and photos on RiftJunkies.