Quality plays a key role in software life-cycle. With the purpose of specializing and evaluating software product quality, ISO had published software quality model standards, SQuaRE series standards. In order to meet the growing demand for software quality measurement, ISO have revised the ISO/IEC 2502n series of standards, recently. This paper introduces evolution of software quality model standards and the details of SQuaRE series standards. Furthermore, the shortcomings of ISO/IEC 2502n software quality measurement series standards were analyzed and a road map of new systems and software product quality measurement reference model was proposed. These outcomes were accepted by ISO in the ISO/IEC JTC1 SC7 plenary meeting, which held in May 2016, and will be integrated into next version of ISO/IEC 25020.