When will Fennorian be added as a mount?

I remember there was talk about him being added as a houseguest last year, but I don't recall that ever happening. I loved him in Greymoor and was super excited when they added the companions feature because I was hoping I could add him to my party. What are the chances of him being eventually added as a companion of some sort?

Edit: freudian slip. did not mean to refer to him as a mount. my bad