Augment Slot/Pre-U17

Named items
Augment slots have been added to many of new/upgraded named items, see Update 17 named items for details.

Old Epic Augments
The old Epic Augment Crystals will no longer be available after Update 17, and they do not function in the new slots. Existing items won't lose any of their effects, so you aren't forced to update old Epic items. However, if you decide to do any more modification with your current item, you will need to do the following "Cleansing Ritual" to update your item.

To convert an old Epic item to use the new slots, place the item you would like to convert into the Altar of Epic Rituals along with 50 Siberys Dragonshard Fragments. This converts the augment slots on the item to the new system. They retain their colors and can accept the new augments, but can no longer use Epic Augment Crystals from before Update 17. This process will remove all currently slotted Epic Augments in the item, and may also remove other modifications, such as Stone of Change recipes. Players get no refund over this.

Also, as you can see, some of the above change creates "pre-patch legacy items" such as GFL slotted Yellow Slot items and Toughness slotted Blue Slot items. These kind of items will never be available again, much like old version Ascension Chamber loot, ML8 Green Steel items, Epic Seal of the Earth with Acid lore, Epic Brawn's Spirits with enhancement intimidate +5 and so on.

Old Guild Augments
Existing guild augment slots and the guild augment vendors will remain in Locksmith Square in House Kundarak, but new items won’t have guild augment slots after Update 17.