The document discusses changes to cataloging rules and practices between AACR2 and RDA, including:
- Replacing the GMD with new 336, 337, 338 fields for content, media, and carrier type.
- Adding new relationship designators to show connections between works, people, families, groups and more.
- Allowing for listing all authors/contributors instead of "et al."
- Encoding dates of important events in creator authority records.
- Representing fictional contributors and addressees as relationships rather than just subject access.
- Providing fuller descriptions of relationships between works through new fields like sequels and translations.