Optimizing major release frequency using agile practices

My experience report focuses on the Image Processing Toolbox story, how we transitioned to agile practices to address the problem of needing more frequent major releases of our shrink-wrapped product, and how we have continually adapted our processes in the context of an evolving business environment. Over the last three major releases of the product, we have evolved from being primarily scope-driven to finely balancing scope and schedule over the entire span of the release. The most recent major release was planned to be diversified in scope and was delivered right on its planned schedule, fifteen months after the previous major release.