The first patch of the year is coming to World of Warcraft: Cataclysm. The patch will be deployed on public test realms, and the patch includes various updates that the developers were unable to fix through the recent hotfix updates. Some class balance changes, bug fixes, and other patch worthy items will be addressed in patch 4.0.6.
You can find the preliminary PTR patch notes over at Battle.net . If you aren’t liking what you are seeing, or are upset that somethng specific has not been mentioned, this isn’t the final version of the 4.0.6 patch notes and the development team at Blizzard is hard at work on fixing each and everything that is needed.
Source: World of Warcraft