A few minutes ago Musclenerd from the Dev Team (people behind redsn0w) tweeted out some screenshots from his iPhone 4S. One shows siri in action with cydia in the background. The other is his phone running mobile terminal.
The jailbreak may be only in its first stages, however the good news is that we know something is getting done. Also, it is good news that we know people from both Chonic and the Dev Team are working on the hack. As always we will have a tutorial for jailbreaking the iPhone 4S as soon as it is out. Below are the pictures that he tweeted out.