07-09-2012 Full paper submission deadline
21-09-2012 Notice of acceptance deadline
12-10-2012 Paper camera-ready deadline
26-10-2012 Main event, Masaryk University in Brno, Czech Republic
From the listing of topics for papers, semantic diversity going to run riot at this conference.
Checking around the website I was disappointed the papers from Argumentation 2011 are not online.