Recently, geohot has updated his limera1n website. The limera1n, when clicked, leads to a picture of several iDevices with a limera1n icon. This could be a clue that geohot is making a comeback. Again, it's hard to tell at this point.CONFIRMED!

For those who don't think this is geohot's site, the Whois information of matches the Whois records of perfectly.

Also, recent tweets from Chronic Dev Team members confirm this;
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

Stay tuned for more updates.