When it comes to announcing plans for an event, the folks in Cupertino typically send out invites and info via email. That's not the case this year, though, as Apple is relying on its virtual assistant to inform the masses about its annual WWDC soirée. Thanks to Siri, we know the developer conference is scheduled for June 13th through the 17th in San Francisco, the event where we'll hear details on new versions of OS X, iOS and WatchOS.