http://libregraphicsmeeting.org/2018/call-for-participation/
The 2018 Libre Graphics Meeting (LGM) will take place at the end of April in Seville, Spain. This annual gathering is an opportunity for teams, contributors and practitioners involved in Libre Graphics to work together, share experiences, and hear new and inspiring ideas.
By Libre Graphics we mean ‘Free, Libre and Open Source tools for creative uses’. LGM is not just about software, but extends to standards and file formats used in creative work. Participants in LGM include developers, designers, academics, and activists. People from around the world who are passionate about Free/Libre tools and their creative applications.”