Here are some important deadlines!

Call for Abstracts Monday 15 June 2015
Abstract submission deadline
Monday 14 September 2015 (extended to 30 September)
Announcement of accepted abstracts Monday 30 November 2015 (reported to 21 December 2015)
Full paper submission deadline Sunday 21 February 2016 (by 11:59PM)
Announcement of accepted papers Monday 2 May 2016
Revised paper submission deadline & Deadline for early-bird registration end of May 2016
Registration deadline August 2016