Augments

Augmentation is a new feature introduced in. When you retrieve an armor or weapon from a Strongbox, it comes with 0 to 3 augment slots, each with 1 to 10 levels. Armor can only have 0 to 2 max augment slots. Augments are bought to make weapons and armors stronger and more useful. Sometimes, the weapon/armor comes with an already applied augment. You may not augment a weapon or armor with two of the same augments. The cost for augmentation can change through weapon level, different augments, and the level of the augmentation. You can't remove augments unless you have an elite augment core, which has multiple ablities including, adding another augment to the weapon, making the max number of augment from 10 to 12 and clearing all current augments on the weapon. It is not clear how it works for armor at the moment, and we will have more details in the future.

Other
Three other augment icons and their names exist in the game's swf file. Their exact purpose and whether or not they will be implemented is unknown. One can speculate about their purpose, however, as they're given seemingly self-explanatory names.