George Hotz has released his much anticipated Mac OS X version of purplea1n - jailbreak software for iPhone 3GS.

Saurik has almost completed work on Winterboard and will soon release the update that adds compatibility with the iPhone 3GS. We do not have many details about it, but we know that is coming.

We published many different iPhone 3GS vs iPhone 3G tests results. Here is one that compares two devices running Cydia Installer:

This video tutorial describes how to jailbreak iPhone 3GS using purplera1n.