The update, which is dubbed The Tomb of Sargeras WoTLK Gold, includes a number of major changes such as a new dungeon, PvP Brawls, Pet Battle Dungeon, and class-specific campaigns, which give quests which give you new epic class mounts.

World of Warcraft : Legion - Tomb of Sargeras Patch Survival Guide

Those mounts will be even more valuable due to 7.2 adding the ability to fly through areas like the Broken Isles. This will not be readily available for everyone, as you'll first have to earn the Broken Isle Pathfinder, Part 2 Achievement to earn the right to take off to the skies.

7.2 introduces new ways to improve your artifacts with new traits, more rankings for existing traits as well as a new final ability that is unlocked through a questline.Cross-faction play, which will allow for Horde as well as Alliance players to form a group to form a group for the very first time in game's history was just announced but it's not available in patch 9.2. The cross-faction feature will be released in patch 9.2.5 and doesn't offer a specific release date. For the complete patch 9.2 notes, see below.

Zereth Mortis was established by the First Ones as a workshop for the creation of afterlives. Its denizens--the automa--have built all that is in the Shadowlands. It's an eerie and WoTLK Classic Gold mystical place that defies the notions of reality and physics. The Jailer will use the secrets of Zereth Mortis to change the shape of reality, and bend it to his malevolent will.