Blizzard has stated that despite being able to create the new race/class combos being introduced with The Shattering, players will not be able to change the races of existing characters to those new race/class combos until Cataclysm's launch on Dec. 7. If you had planned on, say, turning your tauren druid into a troll or your night elf hunter into a human, you are out of luck until Cataclysm.
World of Warcraft: Cataclysm will destroy Azeroth as we know it; nothing will be the same! In WoW Insider's Guide to Cataclysm, you can find out everything you need to know about WoW's third expansion (available Dec. 7, 2010), from brand new races to revamped quests and zones. Visit our Cataclysm news category for the most recent posts having to do with the Cataclysm expansion.