New content has been added for Battle for Azeroth, including:
- New zones – Drustvar, Tiragarde Sound, Stormsong Valley, Nazmir, Vol’dun, and Zuldazar
- New level cap – 120
- New Heart of Azeroth and Azerite armor system
- New dungeons and raids
- Island Expeditions
- Warfront – Stromgarde
- New Allied Races – Dark Iron Dwarves and Mag’har Orcs
- New Dueler’s Guild
- War Mode in Kul’Tiras and Zandalar includes air drops and bounties
- New mounts, pets, achievements, transmog gear, and more!
Source: https://worldofwarcraft.com/en-us/news/21959894/battle-for-azeroth-patch-notes