Le proposte di aggiornamento dei formati MARC 21 e i documenti di discussione presentati dal MARC Advisory Committee alle riunioni dell'ALA 2013 Midwinter sono stati aggiornati con i risultati delle discussioni e sono disponibili ai seguenti indirizzi:
 

Proposal 2013-01: Identifying Titles Related to the Entity Represented by the Authority Record in the MARC 21 Authority Format
https://www.loc.gov/marc/marbi/2013/2013-01.html

Proposal 2013-02: New Fields to Accommodate Authority Records for Medium of Performance Vocabulary for Music in the MARC 21 Authority Format
https://www.loc.gov/marc/marbi/2013/2013-02.html

Proposal 2013-03: Making Field 250 Repeatable in the MARC 21 Bibliographic Format  https://www.loc.gov/marc/marbi/2013/2013-03.html

Proposal 2013-04: Defining New Code for Score in Field 008/20 (Format of music) in the MARC 21 Bibliographic Format
https://www.loc.gov/marc/marbi/2013/2013-04.html

Proposal 2013-05: Defining New Field 385 for Audience Characteristics in the MARC 21 Bibliographic and Authority Formats
https://www.loc.gov/marc/marbi/2013/2013-05.html

Proposal 2013-06: Defining New Field 386 for Creator/Contributor Group Categorizations in the MARC 21 Bibliographic and Authority Formats
https://www.loc.gov/marc/marbi/2013/2013-06.html

Proposal 2013-07: Defining Encoding Elements to Record Chronological Categories and Dates of Works and Expressions in the MARC 21 Bibliographic and Authority Formats
https://www.loc.gov/marc/marbi/2013/2013-07.html

Discussion Paper 2013-DP01: Identifying Records from National Bibliographies in MARC 21 Bibliographic Format
https://www.loc.gov/marc/marbi/2013/2013-dp01.html

Discussion Paper 2013-DP02: Defining Subfields for Qualifiers to Standard Identifiers in the MARC 21 Bibliographic, Authority, and Holdings Formats
https://www.loc.gov/marc/marbi/2013/2013-dp02.html

Discussion Paper 2013-DP03: Defining a Control Subfield $7 in the Series Added Entry Fields, for the Type and the Bibliographic Level of the Related Bibliographic Record
https://www.loc.gov/marc/marbi/2013/2013-dp03.html

Discussion Paper 2013-DP04: Separating the Type of Related Entity from the RDA Relationship Designator in MARC 21 Bibliographic Format Linking Entry Fields
https://www.loc.gov/marc/marbi/2013/2013-dp04.html