Didn't see the video in the other thread, sorry, feel free to delete.
Huge amounts of new things:
- Appearance customisation
- Rated warzones
- New maps for PVP and PVE (new raid etc)
- New gear
- UI customisation
- Legacy family tree and unlockables
- Guild banks
- etc.... just watch the video :>
http://www.youtube.com/watch?v=jtnLMcWdARY&hd=1