The piece also stated that Apple would teach Siri to speak Japanese and Russian. Support for Chinese will be limited, at least initially, if the article is to be believed:

Although Siri retained its beta label, and it is well-known for occasionally taking extended coffee breaks, it has been popular with users. Apple’s marketing positions Siri as the differentiating feature of the iPhone 4S. According to the answer-engine Wolfram Alpha (a Siri content partner), Siri queries represent a quarter of all its queries.

  • Four months in, Siri represents about a quarter of all Wolfram Alpha queries (9to5mac.com)
  • iPhone 4S pre-orders sell out in Hong Kong in 10 minutes, supply elsewhere “still a gating factor” (9to5mac.com)