Our colleagues at ConsoleJunky.com have let us know today that the ECMA has now approved the UMD (Universal Media Disc) Media Format as an iSO optical disc standard, giving it the title ECMA-365. As detailed HERE, there are (2) standard UMD types- Type A (0.9GB) and Type B (1.8GB). This is indeed good news as the UMD Media Format is now open publically, and both companies and curious developers/individuals can now download the UMD 95-page Spec Sheet in PDF Format to learn more on exactly how UMD works!