As iPhone 4, iPod touch 4G, Apple TV 2G and iPad users on iOS 4.1 eagerly wait for Greenpois0n jailbreak tool to be released 2 days from now, iPhone 3G and iPod touch 2G users on iOS 4.1 can now jailbreak with Redsn0w 0.9.6 tool which is beta release version. This jailbreak tool can also be used for iOS 4.2 jailbreak but I would not recommend that action as it has not been tested for iOS 4.2 jailbreaking capabilities.
In an another update Apple has released the final iOS 4.1 version for iPhone 4, iPhone 3G/3GS and iPod touch 2G that includes new enhancements. The new additions are Game Center, HDR photography, MobileMe, iTunes Ping and uploading HD videos on Youtube. But if you want to enjoy the jailbreaking freedom you better stay away from this update.
Via: Redmond Pie