With WoW:Cataclysm only a month (or three) away, it's time to start reading up on what will change for Add-On authors.

Preparing for Cataclysm (WoWGrunt)
- Futher deprecation of getglobal and setglobal
- Retirement of the event globals

Patch 4.0.1 (WoWWiki)
- see the User Interface section at the bottom of the list

Patch 4.0.1/API changes (WoWWiki)
- Global variables this, event, arg1, ..., are no longer available
- Certain events are no longer available or have changed
- Lots of global functions have vanished, lots have been added

World of Warcraft: Cataclysm Beta - (English) Forums -> UI & Macros Forum