Go ahead and ask Siri what languages she speaks. Unlike a few weeks ago, her reply will now include Japanese. We mentioned that extra languages were going to be coming to the app soon — looks like Japanese will be the first to arrive. [9to5Mac]
Now there's a great source for more Apple release leaks.
"Siri, what OSes are you compatible with?"
"Siri, what other iPhones could I have bought?"
"Siri, what CPUs are available in MacBook Pro laptops?"
"Siri, what carriers can I use the iPhone on?"