As it may seem, Siri can not keep secrets. If you ask Apple's Digital Assistant when it becomes the next WWDC, it will answer you without hesitation: from 13 to 17 June in San Francisco.
Siri doesn't mention the location of Apple's next Worldwide Developers Conference, but the prevailing view is that it will be held at Moscone West, as all events for that weekteam mention the specific part in her calendar.
Otherwise Siri did not witness anything else. TNW asked her what will be announced, and she didn't information. He even told the curious reporter to check the webσελίδα of Apple for more information (which of course doesn't exist yet).
Apple friends will have to wait for announcements for iOS and OS X (or MacOS, as rumors say it will be the new name).
Rumors at Internet they also mention that there will be news MacBooks maybe even a new Apple Watch.
Just do not hurry, you'll see the WWDC in June.