We’ve recently made a number of changes to the PPD/CCNC database -- a continuously updated repository of syntheses of research evidence about health systems. It’s been re-named Health Systems Evidence, moved to a new webpage (www.healthsystemsevidence.org), and significantly enhanced in both content and functionality. Health Systems Evidence now contains more than 1,100 syntheses of research evidence about governance, financial and delivery arrangements within health systems, and about implementation strategies that can support change in health systems. Links to abstracts, user-friendly summaries and full-text reports have been made available whenever possible.