It appears that Apple has announced the dates for its annual Worldwide Developers Conference through Siri. Asking Siri “When is WWDC?” gets the response, “The Worldwide Developers Conference (WWDC) will be held June 13 through June 17 in San Francisco. I can’t wait!” It’s possible this response went live earlier than expected, as Apple hasn’t updated its WWDC website yet to reflect this year’s dates,…