The unofficial iPhone Dev Team has released the redsn0w 0.9.5 beta, believed to be the first publicly-available jailbreak for Apple's iPhone 4.0 firmware. The code relies on the same basic exploit used since iPhone 2.x, and in theory allows people to run unofficial apps. Because iPhone 4.0 itself is new however, the hack is really intended for developers intending to transition their apps to the new firmware.
