Apparently his Q&A at an "exclusive venue" is supposed to start about fifteen minutes from now, but even the HT faithful who are at the conference are posting to ask where it's going to be held:

https://hashtalk.org/topic/29378/what-a-sight/139

How lame is this going to turn out to be? Stealth Q&A session at an undisclosed location, only the hardest of the hardcore faithful, and an edited video released after the fact?

Josh Garza
‏@gawceo
@HashbasePrime most questions will end up being about a pending update. Trying to coordinate the timing. Will let everyone know when I know