Presently Available in these Editions and Languages (as of September, 2009):

Canadian edition (Simon & Schuster)

United Kingdom Edition (HarperCollins/Element)

German

French

Spanish

Italian

Dutch

Russian

Japanese

Portuguese (Brazil)

Portuguese (Portugal)

Czech

Hungarian

Slovak

Swedish

Indonesian

Chinese (simplified/Mainland)

Chinese (complex/Taiwan)

Soon to Appear:

Bulgarian

Danish

Greek

Korean

Norwegian

Romanian