Geohot posted a picture on www.limera1n.com of four iDevices displaying the limera1n logo.
P0sixninja has since confirmed that it is real:
yes, the news about geohot is true, the day after we release ETA he decides he wants a piece of the #pie
and yes it is a different bootrom exploit, he wants us to use it in GP, but there's no way we'll make our ETA if we do
Greenpois0n was scheduled to be released on October 10th, at 10:10:10 GMT.
StealthBravo also tweeted: geohot's return is no joke. He is back and is going to release limera1n unless someone talks him out of it.
P0sixninja has said that they will use Geohot's exploit if they can implement it in time; however, they will not change the release date.
We are not changing our release date. If we can implement @geohots before 10/10 we will use that, otherwise we're using ours. #roadblocks
MuscleNerd: As dramatic as geohot's last-minute all-device JB is, still a shame that two bootrom holes will be burned at once.