The armor style appears to be based on the original Altmer racial motif from the base game - but has been visually reworked and upgraded. As a result, this style appears to be more of an upgrade to the older racial style, as opposed to a brand new style.
Some of the weapons, which already exist as Tier 5 Racial Styles, also are included - however some others are new designs.
Crafting Motifs 89: Ancestral Altmer
|Gem Needed||Etched Adamantite|
|Level required to learn|
|Sets in this Style|
Where to get Ancestral Altmer Motif
Obtainable via the new Antiquities system.