Release in 2012 of The Last Frontier: Practice Guidelines for Treatment of Complex Trauma and Trauma Informed Care and Service Delivery was hailed as a major contribution both to effective treatment of, and mental health services for, the many people who experience the devastating impacts of complex trauma. Produced by the Blue Knot Foundation (then Adults Surviving Child Abuse, ASCA) the Practice Guidelines were widely praised and rapidly endorsed both nationally and internationally. Prior to their launching in the Australian Federal Parliament in October 2012, they were unanimously endorsed by the ISSTD and presented at the 29th Annual ISSTD Conference in Long Beach, California. An explicit aim of the 2012 Guidelines was to collate and distil current research insights from diverse relevant fields. Seven years later, key developments – which include belated inclusion of the diagnosis of Complex PTSD in ICD-11 and completion of the Australian Royal Commission into Institutional Responses to Child Sexual Abuse – highlight the need for revising and updating of the original document. This presentation outlines the new and additional inclusions to the Blue Knot Foundation Practice Guidelines, and discusses the implications for enhanced treatment options for people who experience the impacts of complex trauma.