Since my last posting looks like apple released a new firmware. Its already been jailbroken.
Jail break for 4.1 here http://www.redmondpie.com/jailbreak-ios-4.1-on-iphone-4-3gs-with-limera1n-how-to-video-guide/
Looks like 18 hours ago pod2g announced he has found another vulnerability for untethered.
besides that looks like the iphone scene is pretty quiet. Sorry I dont share info about beta jailbreaks. I know there is one out there but its not something I will post.