Apple just unveiled the WWDC 2012 official app for iPhone and iPad to help the attendees. To start using the app you must have Apple ID and WWDC 2012 ticket.
The WWDC 2012 app lets you browse the schedule of sessions, labs, and special events. You can also mark and view favorites, get notified on the latest news, access maps to find your way around Moscone West, and view daily snapshots from WWDC.
Source : CultOfMac