A brand new version of Redsn0w (0.9.15B1) has hit the Internet, and it currently works with iOS 6. The jailbreak is tethered, meaning that any time you update, reboot, or even have your phone die, you’ll need to re-attach your phone to a computer and have the Mac application re-jailbreak your device.
It’s not perfect, but it’s certainly the first step towards a full jailbreak of iOS 6. Personally, I’d hold off until the full jailbreak is released, but if you can’t help yourself, you can go get your jailbreak on now.
Head over to the Dev Team Blog, and check out their post titled Restoration reinvigoration. It provides a lot of details about your device, and the steps that are required to jailbreak your iPhone, iPad, or iPod touch, and other jailbreak goodies and reminders.