iOS 6.1 for iPhone, iPad and iPod Touch has come. Here's the IPSW direct download link. You can jailbreak untether those iDevice using evasi0n.
Download iOS firmware bellow, install latest iTunes and open it. Connect your iDevice to pc, select your device from the left navigation panel on iTunes. Hold down the Shift or Alt/Option on Mac and hit the restore button on iTunes. Browse and select the downloaded iOS 6 IPSW file. Let the restore process complete until complete.