personally, i dont think they should wait untill the official SDK, but i do have logic behind my thoughts,
In my opinion, I'm pritty sure that apple is going to release a 1.1.4 or something anyway to accommodate for installing apps into the ipod/iphone so we might as well have it now
That may be true, but if they don't post how to jailbreak or files to do it, Apple probably won't plug the hole in whatever firmware will be required for third party applications. They are trying to keep their point of entry a secret from Apple until third party apps are officially available. So that there is less chance that the next firmware update will patch the security breach they've found.