EU:
http://eu.battle.net/wow/en/blog/807...€-16_04_2013

http://eu.blizzard.com/store/details.xml?id=210000104

---------------------------

US:
http://us.battle.net/wow/en/blog/942...y_10-4_16_2013

http://us.blizzard.com/store/details.xml?id=110000044

Bonus Sale @ Newegg - Buy the physical box battlechest for $20 and get the Cataclysm expansion for free (limit 5):
http://www.newegg.com/Product/Produc...82E16832127015