Blizzard has revealed that Level 70 Boosts will be available for Wrath of the Lich King Classic. The boost will not be available for Death Knights, but all other classes will have no restrictions.
WoW Classic Wrath of the Lich King will release in 2022.
Wrath Classic Expansion RevealClassic Wrath Releasing 2022 Wrath of the Lich King Classic Trailer Expansion FeaturesLevel 70 Boosts Death Knights Available in Pre-Patch Level 70 Boost – The level cap will be increased to 80, and we’re introducing a Level 70 Boost so those who didn’t play Burning Crusade Classic but wish to play Wrath with their friends or explore Northrend can do so right away. This boost will be available one per account and can be used on any class except Death Knights.. Read more on wowhead.com