It’s time for another iOS 5 update, the first (or second if you look at it). iOS 5 beta 2 can only be accessed via the also updated iTunes 10.5 beta along with the corresponding .ipsw file for your iOS device, meaning that the shiny OTA feature is not operational yet.
New features that have been discovered by users so far are an animated boot logo, notifications being much bigger on the lockscreen along with wireless syncing between a Mac running the latest iTunes 10.5 beta and an iOS 5 beta 2 device. Go ahead and jump into the developer section to get updated or ask one of your dev friends very nicely to get you on board. Via: Apple