announced on twitter by pod2g some very nice work by him
and acording to here it takes advantage of the boot ROM of iOS devices so the only way to block it is by hardware modification so apple will not be able to easily block it.
the jailbreak still has some more work to go before it is released.
hopefully it can't be done through safari so won't pose a genuine security risk (like jailbreakme) to the device but done through the computer like the other jailbreaks
and acording to here it takes advantage of the boot ROM of iOS devices so the only way to block it is by hardware modification so apple will not be able to easily block it.
the jailbreak still has some more work to go before it is released.
hopefully it can't be done through safari so won't pose a genuine security risk (like jailbreakme) to the device but done through the computer like the other jailbreaks