Ever since Apple introduced Siri voice control in the iPhone 4S, Mac users have been wondering: when's our turn? Well, that day might finally be near. Sources for 9to5Mac claim that Siri will be a "tentpole" feature of OS X 10.12, which is expected to show at Apple's Worldwide Developer Conference (usually in June) and release a few months later. Supposedly, it's almost as straightforward as what you see on iOS -- you only have to click a menu bar item or say "hey, Siri" to start issuing commands. It's not clear if there will be any Mac-specific features, but the tipsters warn that the interface could easily change between now and the introduction.