From the News page, attendees now have access to the event schedule for various labs, sessions, and events. There is also an available grid for registration and event hours.
Along with the news update, an Attendees Guide has been posted and a labs overview. If it’s your first WWDC event, the Attendee Guide will be very helpful.
Lastly, an app for WWDC 2012 is now available in the App Store. Aside from maps, guides, and schedules, the app offers a comprehensive view of WWDC and is a must-have for attendees.