Next WoW expansion: Cataclysm

It had been rumored over the last week or so, but it is now official. Cataclysm *is* the next expansion for World of Warcraft.

Some of the notes:

• Level cap raised to 85
• New Alliance Race: Worgen (werewolves)
  
• New Horde Race: Goblins
• Massive changes to the old zones (Kalimdor/Eastern Kingdoms)
• The Barrens is apparently to be full of lava and split into two zones
  
• Wetlands are destroyed.
• Ashenvale has been hit some too
• Azshara will become a low-level zone
• Flying mounts in Azeroth
• New race/class combinations (Human Hunter, Orc Mage, Night Elf Mage, Dwarf Mage, Blood Elf Warrior, Dwarf Shaman, Undead Hunter, Tauren Paladin, Tauren Priest, Gnome Priest, Troll Druid)
• Azeroth zones changed forever. No more going back to how they are now, apparently
• Shadowfang keep and Deadmines will now have a heroic option and will also be revamped
  
• A new leveling system for guilds
• Achievements for guilds
  
• Deathwing is back!
• Archaeology is a new secondary profession
• New Rated Battlegrounds

Thanks to WoW Insider for their live blogging coverage, from which I grabbed most of this info! Also thanks to MMO Champion, who apparently is buddy-buddy with someone at Blizzard.