From the press release:
Following the completion of its annual Payment Card Industry Data Security Standard (PCI DSS) assessment, Heartland Payment Systems has successfully validated its compliance with PCI DSS. As such, Heartland is returning to Visa’s List of PCI DSS Validated Service Providers. According to Visa, Heartland will appear on the list – which can be found at www.visa.com/cisp — on Monday, May 4.