Just in case you are wondering, you have to double press the home button for summoning up the camera button in current versions. There were rumors flying around earlier that suggested Siri will be supporting Japanese iPhone 4S owners in the future. The above screenshot of Siri’s settings is evidence on the matter. As you already know, Nuance is the driving force behind Siri and it’s worth noting that Nuance’s Dragon Dictation already supports Japanese. So a Japanese Siri is certainly not far away.