In less than 24 hours since the release of iPhone 4.0 developer version, the iPhone dev team seems to have managed to jailbreak iPhone OS 4.0 beta. A member of the iPhone dev team, Musclenerd has posted a video proof which showed off a VNC app running on a jailbroken iDevice in action.
Check out the video which shows jailbreaking of iPhone 4.0 beta OS. No ETA (Estimated Time of Arrival) announced on release.
For the uninitiated, iPhone OS 4.0 was announced yesterday by Steve Jobs with 100 new features including multitasking, unified inbox, fast app switching etc. You can download iPhone 4.0 (beta) if interested.