This article synthesizes the conclusions of the empirical studies in this special issue and outlines key questions in future research. The research reported in this volume has identified several fundamental issues in pronunciation-focused task design that are discussed in detail and on which suggestions for further research are outlined. One crucial issue is how attention to pronunciation resulting in language-related episodes effectively leads to robust gains in accuracy. Another important aspect discussed is the need to adapt task design features to the phonological domain under focus and how to incorporate systematic patterns of first language interference into the task structure. Finally, we propose that future research in task-based pronunciation teaching and second language phonetics and phonology should systematically examine learner factors known to affect task performance and task features established in the research domains of lexical and grammatical development.