The Online Chopin Variorum Edition (OCVE) begins a third phase of developmental research today thanks to a grant of $274,000 from the Andrew W. Mellon Foundation, which previously supported OCVE at a pilot stage (2002-03) and in two developmental phases (2005-15). OCVE constitutes an unprecedented online resource featuring digital images of manuscripts and early editions of the works of Fryderyk Chopin; it also offers extensive scholarly metadata and sophisticated tools for comparing discrete witnesses, thereby allowing users to reconstruct the creative history of the music. The latest phase of research will seek to develop new conceptual approaches to digital musical editions, thanks in part to the collaborative input of designated international partners. The current OCVE resource - available at www.chopinonline.ac.uk along with two cognate projects (Chopin's First Editions Online and the Annotated Catalogue Online) - will also be enhanced and expanded. OCVE is based in the Faculty of Music at the University of Cambridge and is directed by Professor John Rink. As Senior Research Associate Dr Christophe Grabowski will conduct new scholarly research, while the Department of Digital Humanities at King's College London will handle the technical development. Sarah Williams (Cambridge) will continue to act as Programme Manager. OCVE gratefully acknowledges the generous ongoing support of the Andrew W. Mellon Foundation.