Following on from the release of iOS 4.3.3 on Wednesday which included fixes for the recent location tracking issue, an untethered jailbreak package has been released by the iPhone Dev Team and is available now. The untethered PwnageTool, redsn0w and ultrasn0w jailbreaks bring with them the ability to jailbreak any iOS device (except the iPad 2) running iOS 4.3.3 without the need to physically reattach the device to a Mac or a PC whenever the device is restarted.
The new jailbreak therefore covers the iPhone 3GS and the GSM iPhone 4, the iPod Touch 3G and 4G, the first generation iPad and the second generation Apple TV. As mentioned, the iPad 2 is not covered in this list because Apple somehow fixed the first iPad 2 jailbreak within days of release prompting speculation of leaks back to the company. Therefore, the iPad 2 jailbreak is not being discussed at all until it is released by the Dev Team.
As always, jailbreaking is done at the risk of the user but with such a large number of people doing it (up to 10% of all iOS devices are estimated to be jailbroken), it is a relatively common procedure.
For more information, visit the iPhone Dev Team Blog