The same guy who we saw demonstrating a beta Jailbreak on the iPad has finally released a packaged copy for anyone to use. Spirit is an untethered Jailbreak for the iPad, iPhone and iPod touch running firmware versions 3.1.2, 3.1.3 and 3.2. The obvious warnings were mentioned such as not updating the firmware afterward, and this version does not unlock the phone from a particular carrier but just handles jailbreaking.
He warns that the iPad version is still in a partial beta stage, so non-compatible Cydia packages may cause iPads to get screwed up, requiring a full restore. The devices also need to be activated to work. It can be downloaded here.