New Discourse on Language addresses the need for innovative analyses of multi-modal discourse, identity and affiliation within functional linguistics. The chapters in this volume are connected by their common underlying theoretical approach, Systemic Functional Linguistics (SFL), and by their focus on semantic variation (across modalities of communication and between speakers) as well as the negotiation of identity and affiliation. The analyses focus on a diverse range of texts from very different contexts, using analytic techniques that are based on the latest research in this field. They represent a wealth of exploratory, innovative and challenging perspectives, and are a key contribution to the extension of systemic-functional theory to the analysis of multimodality, identity and affiliation. The volume is of interest to linguists, applied linguists, semioticians, and communication theorists.