Unfortunately (or fortunately, in some cases), "recent" additions to the Traveller races list tend to stay with the edition they appeared in. The Ithklur and Schialli are the only TNE or later additions to have jumped editions of the game. The oddities from the T4 aliens book have not reappeared (and for one or two of these, that's a shame), and I'm hoping that most of the new races from the G:T series don't carry forward. A lot of them just don't feel right, and that includes the published take on the Addaxur (who, aside from the name, are another Spacemaster transplant).
We'll have to wait to see about the Ursa and the Sydites...