#WWDC09 tickets sold out in weeks; #SteveJobs missed it due to health. 😞

He returned at #WWDC10, with tickets gone in 8 days! #WWDC11 saw 5,200 tickets vanish in under 12 hours!

iOS and Mac OS X updates, Retina Displays, FaceTime, Grand Central Dispatch, and iCloud.

17/24

Finding it interesting that #Apple seems to have stolen some UX stuff from the #playbook @BlackBerry #wwdc11