As per the official patch notes, the Man’ari Eredar customization option for the Draenei will not be immediately available upon the patch’s release.
Instead, the questline will be activated on live servers one week later on September 12, granting Draenei players the ability to unlock Man’ari Eredar customization options for their characters.
(Source)
CHARACTERS
- On September 12, follow Velen’s prophecy to reveal a new future for some of the draenei people.