https://wccftech.com/blizzard-makes-wow-leveling-faster-for-all-levels-from-40-100-through-battle-for-azeroth-patch-8-0-1-hotfix/

Blizzard has implemented a new Battle for Azeroth 8.0.1 hotfix that reduces the amount of experience required to level up between level 40 and 100.

The publisher already commented on the game’s leveling speed following the launch of the Battle for Azeroth 8.0 pre-patch earlier this month. “Since the pre-patch we’ve made a large number of hotfixes and changes to leveling content, and are continuing to find and fix bugs wherever possible”, Blizzard wrote. “The intention was never to make leveling slower than it was in 7.3.5.”