New MARC 264 field (publishing):
Few examples of RDA records in OCLC (and/or in LC’s catalog) with the new MARC 264 field; most seem to be using only a 264 in lieu of a 260 which seems to follow the recommendations of the RDA proposal.
264 1Sawtry, Cambs : ǂb Dedalus, ǂc 2004.
#20722916 (record in LC has not been updated) but the fields in question:
264 1Carbondale ; ǂa Edwardsville : ǂb Southern Illinois University Press, ǂc 
264 4ǂc ©1990
264 4ǂc ©1990
#61821848 ; via the LC catalog
Updates to authority records:
[Snipped from a list]
The PCC Acceptable Headings Implementation Task Group (PCCAHITG) has successfully tested the programming code for Phase 1 in preparation for the LC/PCC Phased Implementation of RDA as described in the document entitled “The phased conversion of the LC/NACO Authority File to RDA” found at the Task Group’s page at: http://files.library.northwestern.edu/public/pccahitg/.
Changes to name authority records (NARs) that are not susceptible to a mechanical change under Phase 2 will have a 667 note aded to them with the statement:
THIS 1XX FIELD CANNOT BE USED UNDER RDA UNTIL THIS RECORD HAS BEEN REVIEWED AND/OR UPDATED
Some other enhancements will be made, when applicable, if the record is being updated to add the note (e.g., 046 fields are added to records for persons when the information is available).
If a record is a candidate for a mechanical change in Phase 2, no note will be added to the record during Phase 1.