http://www.wowwiki.com/Patch_0.6

Guild creation is now in the game as intended, and here is how it works:

* Find a Guildmaster NPC in any of the major cities.
* Acquire a Guild Charter from the Guildmaster
* Add 9 other people to the Guild Charter
* Return the Guild Charter to any Guildmaster.
* You have a guild!

Druid:

* Now available as a character class!

Mage:

* New Spell: Sleep is gained at levels 8, 20 and 40. Sleep duration has changed to 20, 30 and 40 seconds.
* New Spell: Cone of Cold is gained at levels 26 and 34.

Priest:

* New Spell: Shackle Undead is gained at levels 20 and 40.
* New Spell: Fade is gained at levels 8, 20, 30 and 40.
* New Spell: Flash Heal is gained at levels 20, 26, 32 and 38.

Achja: Magier konnten Schlösser knacken

http://www.wowwiki.com/Khadgar%27s_Unlocking

und Zwerge...

Dwarves can no longer be mages, however all existing Dwarf mages in beta can remain.