I'll be there:
I am volunteering for a slot and also attending the following sessions:
iOS Application Architecture
TurboCharge your iPhone project with Three20 (an open-source Objective-C library)
iPhone Development Kickstart
Hands on BlackBerry Playbook, iOS and Android Development
What is Google App Engine?
Google App Engine workshop
Automated GUI Testing on Mac using ATOMac
There is a lot to choose from. Hope to see you there!