Being a small May patch, the latest TERA patch adds two new Dungeon difficulties to the game. The developers have added a hard difficulty mode to Demokron Factory and Shadow Sanguinary. Demokron Factory is a 7-player raid with a 409-minimum-item-level requirement. On the other hand, Shadow Sanguinary is a 5-player raid with a 414-minimum-item-level requirement. Both encounters feature Imperator equipment designs and Imperator crafting materials.
Please, read the official patch notes to know more about other changes, such as misc bug fixes, improvements, and known issues.