Mage Tower Challenge
Why is Blizzard removing the Mage Tower appearance?
Recently, the players learned the Artifact appearance from completing a Mythic +15 keystone would be available in Battle for Azeroth.
What you need to do before the end of Legion
The cat's out of the bag: Battle for Azeroth will be releasing on August 14, a little over four months from now.
Yes, you’ll be able to get (most) Artifact appearances after Legion
I've been wondering about Artifact appearances in Battle for Azeroth, especially considering our Artifacts are getting an epic sendoff and there's a whole new kind of Artifact in the next expansion.