This brief presents select findings from the "Conversion of Enrollment Slots from Head Start to Early Head Start (HS2EHS) Case Studies," six case studies of grant recipients that converted enrollment slots from Head Start to Early Head Start in 2021. This brief focuses on "implementing new or expanded Early Head Start services following conversion." The full report includes findings pertaining to the entire conversion process from start to finish. Specifically, this brief highlights findings related to the following research questions: (1) To what extent are grant recipients successfully implementing high-quality Early Head Start services following conversion?; (2) What are the characteristics of grant recipients that successfully implement high-quality Early Head Start services following conversion of enrollment slots?; (3) What facilitates successful implementation of Early Head Start services following conversion of slots?; (4) What are the barriers to implementation of Early Head Start services following conversion of slots?; and (5) What technical assistance, resources, or other supports are available and useful to grant recipients implementing new or expanded Early Head Start services?