Blizzard has implemented a new Battle for Azeroth 8.0.1 hotfix speeds up WoW leveling between levels 40 and 100.
Battle for Azeroth Stat Squish and Item Level Changes - Wowhead
Patch 8.1.5 Battle for Azeroth WoW Content Overview - Wowhead
Wow Leveling Exploit Guide 1-110, 1-60, 60-80,80-90, 90-100,110-120 Fast Power Leveling BFA 8.0-8.1
News - Latest Industry Updates by Wccftech
WoW: Battle for Azeroth Patch 8.1 Tides of Vengeance Patch Notes Released; Performance DX12 Optimizations
Wow Leveling Exploit Guide, 1-120, 1-60, 60-80, 80-90, 90-100, Fast Power- Leveling BFA 8.3
World of Warcraft: Battle for Azeroth' Leveling Guide: Level 1-120
INSANE 1-120 SPEEDS BfA Patch 8.1 Leveling Guide: The Fastest Yet?
Gaming News - Gaming and Console News
MMO Servers - Free MMORPG and MMO Games - Best Gaming Forum
COMPLETE 8.2 Leveling GUIDE! POWERFUL 1-120 WoW Leveling Tips
INSANE 1-120 SPEEDS BfA Patch 8.1 Leveling Guide: The Fastest Yet?
Patch 8.1.5 Battle for Azeroth WoW Content Overview - Wowhead
News - Latest Industry Updates by Wccftech
Blizzard didn't intend to make leveling slower in patch 8.0 but it is