Last night @musclenerd posted a tweet saying that iOS 5 has indeed been jailbroken using the limera1n exploit. In his tweet he posted a picture of an iPod touch 4 Springboard with the Cydia icon placed nicely on it.
The full jailbreak story after the break!
The Apple keynote ended less than 24 hours ago, and the iOS 5 beta dropped to developers in even less time and the devs have already managed to jailbreak the firmware. According to @musclenerd, Cydia runs smoothly. This, however, is a tethered jailbreak and there is no word on when the tool will be released. So, if you are already jailbroken on a previous firmware, stay there, do not upgrade to iOS 5 beta 1 if you like your current jailbreak.
What do you all think of this? The jailbreak came quick, but do you think Apple will fill the hole in a new beta of iOS 5? Let us know in the comments.