Look it up on the forums. It’s right here stickied.
The problem here? This info was posted 14 days ago. Shadowlands has been on sale as a pre-order for months now. This is information that should have been communicated a long, long time ago, because it meant that anyone who actually wanted the Eternal Traveler set could have just gotten the quest instead of getting the Heroic Version to get a mount that offered the quest to everyone.
Blizzard’s delays in communicating such a important fact? That’s duplicity as I said. Look up the Webster’s description if you feel this was an inaccurate term to use. Moreover, if you can’t see the issue at play here; then your clearly missing the point entirely. Or you are ignoring it simply because you want to defend what is at it’s core, indefensible.