The iPhone 4S has been jailbroken. The video below is proof of concept, clearly showing an iPhone 4S booting untethered into a jailbroken state. The user, Pod2g loads Cydia and plays around in the app which is designed to work on jailbroken phones only. The phone also displays a clear network signal as a sign that its carrier is still operational.
This means two things. One, not only is the iPhone 4S capable of being jailbroken, but the iPad 2 as well. Both share the A5 CPU which threw up a brick wall in the face of potential iPhone hackers. Two, it will now be infinitely easier to run an untethered jailbreak on Apple devices running iOS 5.0.1.
No ad to show here.