It may be fake, but a new group is going to release a new jailbreaking tool Gull1hack, which will work with all models of iPhone and iPod Touch. The group claim that the jailbreak will be untethered for all the devices.
According to Pattyland, the admin of gull1hack blog:
We just found an amazing Exploit in the Boot-System of the 3GS with the new Bootrom! This Exploit works on ALL iPhone and iPod Touches!
While booting, we overun the buffer memory, letting the iPhone think there is something wrong; But in the moment it tries to enter safe mode, we send a boot signal like Blackra1n or Redsn0w
So no Computer required!
They also posted a videos on their blog:
We still think that the group and tool is fake. We will post a guide as soon as this software releases. You may want to subscribe to technoNix via email or connect with us via facebook fan page to keep yourself updated.