The resource 9to5Mac pointed out that if you ask Siri of the available languages, Japanese is listed as one of the options.
Siri is the best feature of the iPhone 4S,but Apple not stop here.
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Since the advent of technology in the iPhone 4S with Siri could communicate in English (adapted for the U.S., UK and Australia), French and German.
Contrary to what is responsible for Siri most asked question, the Japanese language there is not in the list of supported options panel.
It is possible, the language pack will provide, along with the announcement of iPad 3 next month. According to recent data, this can happen on Wednesday, March 7.