Lists data fields that differ from the last major version (see versions above). Inherited differences in locales are suppressed, except where the source locales are different.
| Section | Page | Header | Code | Old | New |
| BCP47 | u_Extension | cu-sle | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Sierra Leonean New Leone |
| cu-ved | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Bolívar Soberano |
| lw-phrase | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Prioritize keeping natural phrases (of multiple words) together when breaking, used in short text like title and headline |
| tz-uaiev | _description | … | Kyiv, Ukraine |
| t_Extension | d0-morse | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | map Unicode to Morse Code encoding |
| m0-aethiopi | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Encylopedia Aethiopica Transliteration |
| m0-betamets | _alias | ▷missing◁ | beta-metsehaf |
| _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Beta Maṣāḥǝft Transliteration |
| m0-es3842 | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Ethiopian Standards Agency ES 3842:2014 Ethiopic-Latin Transliteration |
| m0-gurage | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Gurage Legacy to Modern Transliteration |
| m0-gutgarts | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Yaros Gutgarts Ethiopic-Cyrillic Transliteration |
| m0-iesjes | _alias | ▷missing◁ | ies-jes |
| _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | IES/JES Amharic Transliteration |
| m0-lambdin | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Thomas Oden Lambdin Ethiopic-Latin Transliteration |
| m0-sera | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | System for Ethiopic Representation in ASCII |
| m0-tekieali | _alias | ▷missing◁ | tekie-alibekit |
| _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Tekie Alibekit Blin-Latin Transliteration |
| m0-xaleget | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | Eritrean Ministry of Education Blin-Latin Transliteration |
| s0-morse | _deprecated | ▷missing◁ | false |
| _description | ▷missing◁ | map Morse Code to Unicode encoding |