The Astrial Infuse quest was introduced 3/28/2020.
Enine posted the following information on Discord:
The first edition of the Astrial Aug has been released speak to Astrial infuse inside of Temple of Veeshan for information of obtaining it. Let it be known this will not be a walk in the park farm for these items they will take effect. Once the weapon is fully completed by a player then donor weapons will have a increase in power as well. I will work on implementing the next 2 editions and the final combine today or tomorrow.
All 3 augs have been implemented. There is no quest task to get, just collect all the pieces for each aug, and combine them in the astrial forge.
Astrial's Infuse (Aug #1 - Slot 2, Type 22) - Recipe: Astrial Infusement Parts Drop in Zone: The Temple of Veeshan (templeveeshan)
Astrial's Greater Infuse (Aug #2 - Slot 3, Type 23) - Recipe: Astrial's Greater Infuse Parts Drop in Zone: Riftseekers' Sanctum (riftseekers)
Astrial's Major Infuse (Aug #3 - Slot 4, Type 24) - Recipe: Astrial's Major Infuse Parts Drop in Zone: Najena (najena)