Publicity team here, working on the various options to communicate all the scheduling goodness to the attendees.
First off, a status update--we're working on the schedule and I expect a huge amount of info to be posted in 24 hours--most likely the entire schedule, all event blurbs, hotel map, food map, exhibitors/artist map, and hours for all events. Once this is up, it will be posted on the front page.
But, sometimes these change during the convention. The traditional way to communicate this is with signage at the Info Booth, and updated schedules outside the rooms.
We're considering continuing the online, live-updated schedule which has been on the web site for the past two years. This is a web page which is designed to be very simple so you can use it not only on a laptop, but on iPhones, BlackBerrys, Palm Pres, and yes, even Windows Mobile devices. When you move the mouse over an event in the grid, a floating box will appear with that event's blurb, so you don't need to go cross-reference it in the program guide. The problem is, I'm not sure very many people at all use it. If not, we may eliminate it, since it takes time to set up and maintain.
Another option is to announce at-con schedule changes on Twitter. That way, you refer to your pocket guide, except for the exceptions that you have received via Twitter.
So, I've put it to a poll, and let's see what people think. Which option would you use? Online live schedule? Twitter? Both? Neither?