CLDR 38 Release Note

No. Date Rel. Note Data Charts Spec Delta Tickets GitHub Tag Delta DTD
38 2020-10-XX v38 CLDR38 Charts38 LDML38 Δ38 master ΔDtd38

See Key to Header Links

This version is under development: for the latest version see version 37. Some links above will not work until development work has started. 


Unicode CLDR provides an update to the key building blocks for software supporting the world's languages. CLDR data is used by all major software systems (including all mobile phones) for their software internationalization and localization, adapting software to the conventions of different languages.

Rough draft as of 2020-07-13

  • 13.1 Emoji and Unicode Symbols (100+)

    • Adding names & search keywords

    • Added 2 character labels: superscript {0} and subscript {0}

  • Compact decimals and Units.

    • Adding 14 new units

    • Plus new binary prefixes

  • New CLDR target languages

    • Basic Level: Dogri, Sanskrit

    • Moderate Level: Norwegian Nynorsk

  • Unit Inflections, Phase 1.

    • Our full goal is to add full case and gender support for formatted units. During phase 1, a limited number of locales (see below) and units of measurement are being handled, so that we can work kinks out of the process before expanding to all units for all locales (where we can get the grammatical structure).

    • The specification will be updated to describe the new structure, and the mechanism for generating translated names for arbitrary compound units.

  • Performance & Quality.

    • Improvements in translation cost and quality

    • Substantial improvements in Survey Tool performance, lowering cost for translation

    • Substantial improvement in quality, using structured Forum topics to allow vetters to collaborate more effectively.

    • Better detection of translator errors.

    • Spec corrections for locale/language IDs.

  • ICU support

    • Improvements to CLDR API

    • Adding approximatelySign for number formatting

Current commits: merges >2020-04-23

New values: ~30,000

Structure added: charts/38/supplemental/dtd_deltas.html (38.0β)

Inflection locales :

Grammatical Features


Case & Gender

pl, ru, de, hi

Gender Only

nb, da, sv, es, fr, it, nl, pt

Data Changes

  • TBD
For access to the data, see the GitHub tag aboveFor more details see the Delta Tickets above.

Specification Changes

The largest changes were the following:
  • TBD
For more detailed specification changes, see the Spec above, and look at the Modifications section.

    Structure Changes

    • TBD
    For more information, see the Delta DTDs above.

    Chart Changes
    • TB


    The following chart shows the growth of CLDR locale-specific data over time. It does not include the non-locale specific data, nor locale-specific data that is not collected via the Survey Tool. It is thus restricted to data items in /main and /annotations directories. The % values are percent of the current measure of Modern coverage. (That level is notched up each release.)


    See also the Locale Coverage Data.


    • TBD

    ISO alignment

    Recorded latest ISO version. [Find the right placement of this new section and remove the BRS #s]
    • Language/Script/Region Subtags (BRS A11):
    • Currency (BRS A11.15)
    • UN codes (BRS A14)
    • Language group (BRS A14.1)
    • BCP47 with tzdata (BRS A16)

    Known Issues

    1. TBD


    Many people have made significant contributions to CLDR and LDML; see the Acknowledgments page for a full listing.

    The Unicode Terms of Use apply to CLDR data; in particular, see Exhibit 1.
    For web pages with different views of CLDR data, see