At its Worldwide Developer Conference (WWDC) today, Apple announced a very important update to Siri: you can start talking to her without having to touch your iPhone. This is triggered by the hands-free phrase “Hey, Siri.” As part of the update, Apple has built in Shazam song recognition as well as streaming voice recognition. Siri also now supports purchasing iTunes content and has gained 22 new dictation languages. More to follow.