This article provides an overview of key challenges in second language (L2) pronunciation learning and teaching within the context of instructed second language acquisition (SLA), with the goal of identifying promising directions for future research. It begins by examining persistent difficulties in L2 pronunciation instruction, such as the typically limited quality of input and the dominant emphasis on grammar and vocabulary in communicative language teaching (CLT). These conditions often result in learners having limited awareness of their pronunciation needs and teachers facing challenges in incorporating pronunciation instruction into CLT-based curricula. The article then reviews emerging instructional approaches that aim to integrate attention to phonetic form within CLT, highlighting the need for further empirical investigation. In addition, several pronunciation training techniques, some underexplored (HVPT, shadowing, embodied pronunciation training, captioned video, accent imitation, and pronunciation self-assessment), are briefly described, with an emphasis on their pedagogical potential both inside and outside the classroom. Finally, the article considers the role of individual differences in L2 pronunciation development and proposes directions for future research in instructed SLA.