The new tool was released Friday by a team of researchers that includes pod2g, the Chronic Dev Team and the iPhone Dev Team. The tool includes a GUI that will run on a Mac or Windows machine and will guide users through the process of installing it and rebooting their devices. There also is a command line tool integrated with the Absinthe installer. The new jailbreak also works on the iPad2, which, like the iPhone 4S, is built using the A5 chip.
Source: https://threatpost.com/absinthe-jailbreak-iphone-4s-released-012012/76123/