A new patch also implies new systems from wangyue's blog

In the new Korthia zone that players can play WOTLK Gold together with various Covenants of the Shadowlands in order to defeat the Jailer's forces in new stories and campaign missions, and in Tazavesh the new mythic-only difficulty eight-boss dungeon the players will learn more about the mysterious group called the Brokers. The players will be able to get access to ground mounts in the Maw after having completed the first quest in Korthia as well as earning fame and fulfilling covenant campaign quests will give them access to the ability to fly mounts within the various Shadowlands zones.

There wouldn't be a patch release without balance improvements which is why there are a number of updates coming to game's classesand systems and covenants and covenants, with PvP being the most notable, getting a huge update. A number of classes are getting completely new or improved PvP skills The PvP gear will now have an item level lower as compared to PvE equivalent gear but will scale to more of an item level when participating in PvP. Numerous covenant abilities are being balanced, and so are other aspects of the game's dungeons as well as raids.

Torghast The game's rogue-like influenced Dungeon, is being altered, with fewer floors per run , and the addition of the score system that is completely new. The game, although initially fun it has turned into a bit of a hassle for many players, as it's the only way to earn Soul Ash currency used to forge Legendary items. This is why players have farmed endlessly in the dungeon and this is a problem that the new modifications to the formula for Torghast can hopefully alleviate.

A new patch also implies new systems, including the previously criticized Shards of Domination. The new passive bonuses that can be inserted into specific items from the Sanctum of Domination raid--have already upset many players. Many now feel forced to recreate their Legendary item twice and this can be a major gold and time investment, in a different slot in order to avoid overlap with new gear which supports Shards of Domination. Happily, Blizzard is at buy WOTLK Classic Gold least throwing players a bone the latest addition that lets new and remade Legendary items automatically have an item socket for gems. The full patch notes for the Chains of Domination update are below.