The 26th EUROCALL conference was organised by the University of Jyväskylä (JYU) Language Campus and specifically the Language Centre. The theme of this year's conference was 'Future-proof CALL: language learning as exploration and encounters', which reflects an attempt to envision language teaching and learning futures in a changing world. What brought researchers together this year are shared concerns in relation to the sustainability of language learning and teaching in technology-rich contexts that are marked by ever-increasing complexity. The collection of short papers in this volume is a very thorough view into the conference proper exhibiting the complexity and novelty of the field of CALL. There are exciting new openings and a more profound exploration of theoretical underpinnings of the contemporary issues in teaching and learning, cross-cultural communication, mobile learning and the like.