The GreHack 2012 Call For Papers has been announced. It will be held in Grenoble, France on October 19th, 2012.
You can download it from the following link: https://packetstormsecurity.com/files/download/113042/grehack2012-cfp.txt
Source: https://packetstormsecurity.com/files/113042/GreHack-2012-Call-For-Papers.html