iPhone SDK 4 beta 2 (Build: 10M2240) and iPhone OS 4 beta 2 (Build: 8A248c) are now available from the iPhone Dev Center. The new iPhone SDK introduces an auto-provisioning feature that allows you to add a new device in a single step from within the Xcode Organizer, making it even easier to enable a device for testing your applications. View the Xcode 3.2.3 Read Me for more details on this feature.
Log in to the iPhone Dev Center and download iPhone SDK 4 beta 2 and iPhone OS 4 beta 2 today. Make sure to read the iPhone SDK 4 beta 2 Release Notes before installing this beta release.