[5teev]

Note: they've included sample code even for non-attendees, something that was not done for WWDC 2011.

[yardie]

I have the sample code for 2010 and 2011. 2010 was neatly packaged up in one big zip file. The 2011 samples are mixed in with the rest of the Library sample code. But you can tell what was used at WWDC because the timestamp will be updated to June.