Just tweeted now by p0sixninja via twitter:
Things have progressed to the point where we don't expect anymore roadblocks. ETA for greenpois0n is 10/10/10 at 10:10:10AM
I guess sunday will be a funday after all :-P
Regarding Tethered or Non-Tethered:
Via chpwn twitter just now:
The tethered status of SHAtter or greenpoison has not been announced. It's a surprise!