Here are the changes coming to WoW Classic:

Here are the changes coming to WoW Classic:
Chronoboon Displacer
Players who complete Chromie’s quests in Andorhal can obtain an ancient artifact of Bronze Dragonflight magic.To get more news about buy wow items, you can visit lootwowgold official website.
Use the Chronoboon Displacer to store any world buffs such as Rallying Cry of the Dragonslayer, Warchief’s Blessing, and Spirit of Zandalar for later use.
Click the Supercharged Chronoboon Displacer to restore your buffs with their previous remaining durations intact.
You may not benefit from additional world buffs until you have restored any that you currently have stored in the Supercharged Chronoboon Displacer.

Gameplay Adjustments
Beneficial buff priority system
Beneficial buffs are now prioritized, similarly to how debuffs have been prioritized.
This should help prevent situations where limited-duration or low impact buffs such as Renew, Rejuvenation, or 6-piece set bonuses would “push off” important buffs such as Rallying Cry of the Dragonslayer or Flask of the Titans when used on a player that is near the buff limit.
Mark of the Champion, Rune of the Dawn, and Seal of the Dawn’s benefits are now marked as “passive” auras and will no longer count towards the player buff cap.

Spell batching removed
The 400ms “spell batch” window has been reduced to 10ms.
This should cause most players abilities to behave in a more responsive way, with damage and healing applied to targets faster. Certain operations in the game now resolve faster, such as purchasing multiple quantities of items from vendors rapidly.
Paladin seals will now persist on the Paladin for a very short time after they’re replaced by a different seal, so that “seal twisting” remains possible.
Naxxrammas
There is now no area of the raised platform in Heigan the Unclean’s encounter space that is safe from Heigan’s mana burn while Heigan himself is on the platform.
Fixed a few areas in the Heigan the Unclean encounter space where Plague Waves could overlap and deal double damage.