A tweet by the chronicteam announces that the 4.1 jailbreak will estimated be out at 10/10/10 at 10.10 am. We don’t know for sure the time zone, but it surely is a estimation of time. Everything looks pretty good now. Just prepare some time for yourself on Sunday for the jailbreak process!
The tether status of the jailbreak is not out yet, but should be good news.
EDIT: It was confirmed that the greenpois0n jailbreak will be untethered. Meaning you do not have to re-jailbreak whenever you restart your phone.