Here’s a rundown of all the changes you can expect in Patch 5.4.0.

What is going away:

• Eternally in the Vale is being removed, as well as the related quests and rewards. Players progress farther through this quest series as they gain reputation–this is not tied to any daily quests.
• The multi-tiered daily system is simplified. Some quest hubs are destroyed, such as the Golden Pagoda and Whitepetal Lake hubs.
• The quests to kill elites are removed.
• The Fish of the Day pool for Jewel Danio is now a sha-infested area.
• Many parts of the Vale are now Sha-infested and destroyed. Most NPCs are tinged with grey, there are many Sha populating the zone, and there is a larger Mogu presence than before.

What is staying:

• The Setting Sun Garrison is still a quest hub in 5.4. Players can complete all the quests that are tied to Quest Achievements from this hub. So far on the PTR, some quests available from the Ruins of Guo-Lai hub are now available from the Setting Sun Garrison.
• Aki the Chosen is still to the east of the Golden Pagoda. Defeating her completes Taming Pandaria.
• All achievements tied to daily quests are obtainable.
• The Lorewalkers are staying in place, as is Kai Featherfall for Challenge Mode mounts.
• Alani is still flying around as before–presumably there will be a way to acquire Reins of the Thundering Ruby Cloud Serpent.

What is new:

• Killing mobs in Vale of Eternal Blossoms normally awards 10 Golden Lotus reputation.
• The elite mobs for One Many Army are now marked as rare spawns. These award 200 reputation when killed.
• On the PTR, any mob in Vale of Eternal Blossoms can drop Schematic: Chief Engineer Jard’s Journal. This is smart loot, meaning that it will only drop for eligible Engineers. This contains recipes for Jard’s Peculiar Energy Source, Not Sky Claw, Advanced Refrigeration Unit, Pierre, and Rascal-Bot.
• Jaluu the Generous has relocated to the capital cities.

Source: Wowhead

You can read the full patch notes here.

Tags: Patch 5.4