For all of you who have been patiently waiting, the wait is finally over... Adobe Air & Adobe Flex Builder 3 were released today!
You can check out the official Adobe press release here.

Be sure to check out related RIA topics at CFUnited Europe conference:
Adobe Flex 3 Overview: Latest features
Presented By Enrique Duvos

Taking Web Applications to the Desktop: Intro to Adobe AIR 1.0
Presented By Enrique Duvos

Enterprise RIAs: LiveCycle Data Services / BlazeDS
Presented By Nick Watson

Also check out the RIA track at CFUnited conference USA