This far out it should still be a bit of a struggle. It's too soon and we've got plenty of time.
At this point, many people have only committed to the event, and that's just in case the registration gets capped. I'd expect Fred/Austin to hit the more open social media again in about a month or so -- by that point people will be thinking about what they want to bring and what they want to do. As the attendees start preparing we'll get a better response . . . but in the meantime, we coax the early adopters in gladly.
As for my schedules . . . I'm taking names and running scenarios of how many for how long to see what kinda blocks I can get away with . . . but nothing more ATM. Too many unknowns, so there's no reason to loose any sleep over numbers not adding up.