Blizzard just announced to have reached an agreement with The9 to publish Wrath of the Lich King in Asia:

Blizzard: “We’re pleased to announce that our agreements with The9, our World of Warcraft partner in mainland China, and Soft-World, our World of Warcraft partner in the regions of Taiwan, Hong Kong, and Macau, have been updated to include the localization, operation, and support of Wrath of the Lich King for players in their respective regions. Further news, including release plans for each region, will be announced closer to launch.” (Source)