Assistive technology software developer AssitiveWare today announced Proloquo2Go 4.0, a major new release of its symbol-supported Augmentative and Alternative Communication (AAC) app that provides a voice to over 125,000 children, teens and adults who cannot speak. Proloquo2Go 4.0 is designed to enhance language development and communication for AAC users. It also aims to better support parents, teachers and therapists to implement AAC best practices.