We distinguish a few
rounds of papers:
5 October 2011 Call for papers published.
5 January 2012 Early round: Full paper submission deadline.
20 February 2012 Early round: Notification of acceptance (including acceptance for Best Paper Award) + Feedback. 20 February 2012 Late round: Paper submission deadline.
25 March 2012 Early round competitors: Finalised paper deadline (Best Paper Award competition). 25 March 2012 Late round: Notification of acceptance + Feedback.
15 April 2012 Early round non-competitors & late round: Final submission deadline.
1 May 2012 Early registration deadline.
23-25 May 2012 Conference.