After years of preparation, a completely new version of the metadata standard RDA (Resource Description and Access) came into effect on December 15, 2020. The standard is now fully in line with principles and practices that are common to linked data. Although the original RDA Toolkit from 2010 will remain available for some time for use in describing titles, the RSC (RDA Steering Committee) advises users of the standard to familiarize themselves with the new RDA in preparation for the transition to the new version.