One year from now, exactly on the 18th of October, e-submission should be made mandatory for all contracting authorities and all procurement procedures (two years after the expected transposition of the revised Directive).
On 26 February 2014, the Classical Sector Directive 2014/24/EU was adopted by the European Parliament and the Council of the European Union. The deadline for EU countries to transpose the directive is 18 April 2016. EU countries may postpone the application of the provisions on e-submission until 18 October 2018 however.