With the new Shaman Ascendance models receiving mixed reviews, it seems the updated models have been adjusted in Patch 11.0.5. New Glyph of Energetic Ascendance allows the wilder hair variant and Glyph of Traditional Ascendance allows players to retain the pre-11.0.5 version.
War Within Patch 11.0.5 Overview & 20th Anniversary Event
The updated baseline Ascendance model uses same armor and effects as the original updated models; however, a helmeted head has been added to tame some of the crazier hair from the initial preview. Below you can find new Ascendance models for all specs for both male and female characters coming in Patch 11.0.5.
In today's PTR dev notes, Blizzard announced two new glyphs that augment Shaman's Ascendance form:
Glyph of Traditional Ascendance is an option for shaman who want to keep their pre-11.0.5 Ascendance form. Glyph of Energetic Ascendance uses the original updated Ascendance model form complete with the wilder hair from the initial preview.