World of Warcraft's Fractures in Time Update Notes and Details are Here

mmorpg.com:

The Fractures in Time update for World of Warcraft is coming on July 11th. Blizzard has shared the update notes with details on all the new features on the way, including the new Mega-dungeon, Dawn of the Infinite, the next Evoker specialization, Augmentation, Time Rifts, and some player experience changes.

The Augmentation Evoker specialization for the dracthyr is coming. This is both a damage dealing role and a support role,  and it uses the powers of the Bronze and Black dragonflights in new ways. You'll act like a force multiplier for your group. Blizzard has already done a deep dive in how this will work, including some of the skills you'll use and chain together for maximum effectiveness and to help your allies get the win.

Dawn of the Infinite, the new Mythic-only mega-dungeon, will pit you against the Infinite Dragonflight. They’re working to transform Nozdormu, the Aspect of Time, into Murozond,and with that, destroy the timeline. The future of Azeroth is at stake in this new dungeon, which features eight bosses, and will reward you with a number of new loot items, including gear, Dragonriding customizations, and a few surprises. You will have to venture through time and turn things back in order to set things right. 

Time Rifts are also coming, and you will have to get together with others to stop all of the Minions that are pouring through these time rifts into the Dragon Isles. Entering the time rifts and plugging the holes is your goal and you'll do that by taking down bosses in alternate timelines. In addition to those bosses, there will also be quests and rewards to collect. Each time rift will grant rewards based on the timeline you encounter through it. In fact, you will not get the same reward