In 2022, PDs: Theory, Research, and Treatment published a 10-year retrospective on the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), Section III, Alternative Model for PDs (AMPD; American Psychiatric Association, 2013). The articles of the 10-year retrospective provided evidence in support of the validity, reliability, and clinical utility of the AMPD. Specifically, it provided evidence in support of the unidimensional factor structure of the LPF and the five-dimensional structure of the pathological trait domains. In addition, evidence in support of the construct validity of the LPF in its association with psychiatric severity, functional outcomes, traditional PDs, cognitive, emotional, and contextual correlates, and other indices of maladaptive self- and interpersonal functioning was provided. Despite this evidence, a significant gap has since been identified related to how the American Psychiatric Association (APA) decides to accept proposed revisions to diagnostic criteria. The goal of the current special issue is to address this gap. (PsycInfo Database Record (c) 2024 APA, all rights reserved).