Apple appears to have introduced us to a new way of announcing when its annual Worldwide Developer Conference will be. We always expect it in June at Moscone West in San Francisco, but the exact date is generally unknown until Apple makes an announcement. Except...this time when you ask Siri.
Is this Apple's subtle way of telegraphing that Siri is coming to OS X and is going to be more well-rounded and capable?
Who knows? Here's the formal announcement published a bit later.