The important deadlines are:
April 21, 2017 - Abstract submission NEW deadline
April 24, 2017 - Notification of acceptance of abstract
June 1st, 2017 - Opening of the online payment for registration
June 30, 2017 - Submission of full paper NEW deadline
July 14, 2017 - Notification of acceptance of full paper
July 21st, 2017 - Early bird registration deadline
August 7, 2017 - Submission of revised full paper deadline
August 14, 2017 - Notification of acceptance of revised full paper
August 21, 2017 - Final registration deadline