Dev-Team member, MuscleNerd gives us some updates about the 4S jailbreak progress on his twitter account. It seems that the Dev Team has managed to decrypt the iPhone 4S firmware and find an exploit – Cydia is already running on the device. It is now only a metter of time before we see a jailbreak. According to MuscleNerd there is still work in progress… actually, a lot of work is still need to be done.
Are we going to see Siri on the iPhone 4 soon? I guess.

Here are some pictures from MuscleNerd, showing the iPhone 4S progress: