This new system gives you the ability to save two separate sets of enchantments on new items and freely switch between the two sets. You can take advantage of this feature to create an optimized set for dungeon combat and a second for battleground conflicts, for example. More details can be found in this preview
In addition to the new dual effects, patch 57 also adds new polish to the Harrowhold – from now on, 20 players can take on Vergos’s four challenges. Rally 19 comrades around you and overcome his challenging new attacks and tactics!