From the Federal Depository Library Program Desktop:
The U.S. Government Printing Office (GPO) has created a Resource Description and Access (RDA) implementation team to ensure a smooth transition from AACR2 to RDA. GPO cataloging staff are continuing their training efforts, and are now working on sample record creation, the identification of local practices and formal PCC (Program for Cooperative Cataloging) review. Full implementation is expected in April, 2013.
Direct to Updated RDA Implementation Timeline
Direct to RDA Project Page