The Library of Congress, the British Library, Library and Archives Canada, and the National Library of Australia have agreed to coordinate their implementation of RDA: Resource Description and Access.
Here's an excerpt from the press release:
These national libraries, together with representatives from professional library associations in Canada, the United Kingdom and the United States, are members of the Committee of Principals which oversees the work of the Joint Steering Committee for Development of RDA, which is responsible for developing RDA. . . .
RDA addresses the needs of the future by providing a flexible framework for describing all types of resources of interest to libraries. RDA guidelines will be easy and efficient to use, as well as compatible with internationally established principles, models and standards. In addition, RDA will maintain continuity with the past, as data created using RDA will be compatible with existing records in online library catalogs.
The libraries plan to implement RDA by the end of 2009. To ensure a smooth transition to RDA, the four national libraries will work together where possible on implementation matters such as training, documentation and any national application decisions. Regular updates will be issued by the group to keep the library communities in their countries informed on RDA implementation progress and policy decisions.