The Elder Scrolls Online Update 41 and the Scions of Ithelia DLC have been released on PC and Mac.
The new DLC is the splashier of the two content updates that go live today, for those who want the newest challenges. Not only are there two new four-player dungeons, Oathsworn Pit and Bedlam Veil, to contend with, elements of this new content will lead into the upcoming Gold Road Chapter. The dungeons include normal and Veteran versions, with hard modes for each of the three bosses within the two. There are unique item sets to earn, including Undaunted Monster Masks, and some new achievements. unlock some of those achievements for rewards that include a brand new skin, dye, and mementos.
If you have had the chance to catch up on some of the recommended content, including from Orsinium, then Scions of Ithelia should expand upon the lore there and link directly to the future in ESO.
Update 41 for the base game is about improvements, new additions, and balance. There are new armor sets, antiquities, collectibles, and furnishings. Unified Repair kits are here, simplifying portable gear repair. Cyrodiil siege weaponry can also be stacked if at max health.
The tutorial will now limit new accounts to the portal corresponding to their alliance at first (access to all will come later). This is similar to how the ESO team limited access to certain quest givers until a certain level to make the early game less busy. This patch also increases minimum specs and graphics space, and drops Windows 7 for future updates.
Update 41 also begins laying the groundwork for future content, including the addition of Scribing. The combat updates in the patch are mostly improvement-oriented, improving taunt, status effects, and helping some under-used styles and abilities get a bit more viable. Status effects are a highlight, since most got functionality tweaks.
See the patch notes at The Elder Scrolls Online.