The Elder Scrolls Online Update 4 Released

With a rush of "new quests, delves, and the conclusion of the Celestial storyline", ZeniMax Online has announced the availability of Update 4 for their fantasy MMORPG The Elder Scrolls Online. There's a full set of patch notes, of course, which I'll quote from:

Upper Craglorn
'¢ Venture north from the badlands surrounding the city of Belkarth into new territory! With the western rockslide cleared and the Iron Orcs' barricade sundered, the roads to Dragonstar are now open to travelers. Here, the insidious Scaled Court and their Iron Orc allies prepare a new invasion force for their master, consisting of terrible monsters created using the ancient alchemy and magical processes of the long-dead Nedes. Six new group delves, three new group instances, and the settlement of Dragonstar await you!

Serpent Trial: Sanctum Ophidia
'¢ Enter the heart of the Scaled Court's power and face off against the Celestial Serpent himself. Make your way through the most loyal members of the Scaled Court and fight the monstrous Trolls and other nightmares the Scaled Court command in defense of their god. Those that return to Hel Ra Citadel or the Aetherian Archive after facing the challenges of the Sanctum Ophidia will find their actions have not gone unnoticed.

Dragonstar Arena
'¢ In the mountains north of Dragonstar, an abandoned ruin has been repurposed to serve as a blood sport arena by a heretofore unknown champion. Warriors from across Tamriel now flock to compete in the arena games with the promise of great glory and fantastic treasures if they can survive. Available in both normal and veteran modes, a group of four players can enter the ring and pit themselves against some of the deadliest challenges yet seen!

Nirnhoned Crafting Trait
'¢ A new crafting trait, Nirnhoned, has been discovered in Craglorn! The necessary trait items can be found rarely while harvesting in Upper Craglorn, and Nirnhoned equipment can be obtained by completing the main quest line in Upper Craglorn.

Larger Delves
'¢ The delves found in Bangkorai, Reaper's March and The Rift are now larger, and contain more monsters and loot. This is an ongoing effort to make all delves in the game larger.