The XP boost will initially appear on the launch from wangyue's blog

The last principle Blizzard define is that the realm of WOTLK Gold Azeroth is the main protagonist of WoW Classic and has the goal of involving players into their own World of Warcraft . This means Blizzard will not be making any major changes to the world in itself. One example of that philosophy that is in use is the previously made announcement that it will not be incorporating deeper tracker features for quests that tell players where to go on their maps which was added in the original Wrath of the Lich King.

As for other changes coming with Wrath of the Lich King Classic, Blizzard writes it will boost levels of difficulty in the Naxxramas raid, and will seek to keep Heroic dungeons both relevant and challenging throughout the expansion.

In a separate forum posting, Blizzard also announced a 50 percent XP increase event called "Joyous Journeys" will be coming to Burning Crusade Classic servers prior to Wrath King Classic's launch. This could help players increase their level of characters before the expansion's release. Blizzard does not have any specific timeframe or date for the XP increase at this time but anticipates the event to last between 6 and 8 weeks until the launch of Wrath of the Lich King Classic. 

The XP boost will initially appear on the launch of the Wrath of  cheap WOTLK Gold the Lich King Classic fresh start servers throughout preparation for the patch.Blizzard recently announced WoW's upcoming brand new expansion Dragonflight is scheduled for releasing before the end of 2022.A history of World of Warcraft So FarSee MoreWoW: Dragonflight Is, Surprisingly coming this year, Preorders Live Now