Update #2 10/17/2009

Confirmation that the new 8GB iPod touch is at least a tethered jailbreak. This device doesn't require personalized img3 files in the way that the iPhone 3GS and iPod touch 3G do. For this reason, it will “always” be jailbreakable (no need to rush and get your ECID signed hashes like you do for the 3GS and ipt3G). But for the foreseeable future, it will be a tethered jailbreak only. - DevTeam