...?
- The changed old world.
- New race-class combinations.
- New spells, talents, and abilities.
- Pre-Cataclysm events, from Doomsayers to Elemental bosses, etc.
- New UI and other graphical changes.
- Justice Points + Honor Points.
- Flexible Raid Lock System
- Gear/stat changes + Reforging.
- Glyph changes.
To my knowledge it will only have 3 to 9. Correct me if I'm wrong. Am I missing some features, are certain #s between 3 and 9 not being included, etc.