for iPhone, iPad and iPod touch and we all know that we are at least 6 months away from any hardware revisions.
Word around the Twittersphere is that the exploit named SHAtter is in the bootrom section, together with Pwnage 2.0 and 24kpwn which will make all existing devices, including the new iPhone 4 and iPod touch 4G pwned for life! It is obviously not publicly available yet, both the Chronic Dev Team and the iPhone Dev Team hackers are hard at work right now trying to get everything ready for full release. Unfortunately though, this jailbreak is reportedly said to be tethered i.e. you will be required to connect your iOS device to your computer on every reboot unlike how untethered userland jailbreak like JailbreakMe worked. iPhone
posixninja has confirmed that Geohot also had this exploit dubbed at that time as “pwned4life” before leaving the jailbreak scene.