Among the changes for this build are the addition of the map for the Dungeons of Naerband, new loot at each boss, and fixes to cage levers in the Dungeons of Naerband specifically. Both dungeons have also undergone some rebalancing to be more appropriate for players, with shadow only present for the level-capped version of the instance. So why not get in there and test the dungeons out? It seems like the thing to do.
Source: Official Site