The Technical Committee 9X of CENELEC during its plenary meeting in Milan on 25-27 November 2015 decided to approve the organisation of the 4th edition of the workshop "ICT on TRAINS" in 2017. The workshop will be held in Brussels, hosted by Infrabel. Exact dates and venue will be defined later on. TC9X also decided to disband the current working group WG 15-3, which was in charge of organising the workshop edition 3, and to create a new working group WG 15-4, which will have the same responsibility for the edition 4. Members of the WG will be defined in the next few months.