Perhaps it's because Gruber is aware that Apple wasn't putting on a Q&A session. They rarely do, and when they do, they let you know, in clear terms.
And who knows? Gruber may have asked about Siri on OS X, or may have been told about a host of other features but was asked not to publish them. You don't exactly want to go and do that if you want any hope of being invited to future dog n' pony shows.
And who knows? Gruber may have asked about Siri on OS X, or may have been told about a host of other features but was asked not to publish them. You don't exactly want to go and do that if you want any hope of being invited to future dog n' pony shows.