QuickPwn 2.2.1 For Windows Now Available
Although the iPhone Dev-Team has officially warned iPhone 3G unlockers to not update to 2.2.1, QuickPwn 2.2.1 is now available. Currently only available for Windows, QuickPwn will jailbreak the iPhone, iPhone 3G, and first-gen iPod touch running 2.2.1. However, those intending to unlock their iPhone 3G should not jailbreak with this method as upgrading with the stock 2.2.1 package will also upgrade the baseband (and lock the phone.)
QuickPwn 2.2.1 is available for Windows at QuickPwn.com.
Thanks to Josh for the tip!