CLDR 47 Release Note

No. Date Rel. Note Data Charts Spec Delta GitHub Tag Delta DTD CLDR JSON
47 2025-04-XX v47 CLDR47 Charts47 LDML47 Δ47 release-47 ΔDtd47 47.0.0

Overview

Unicode CLDR provides 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.

The most significant changes in this release are:

For more details, see below.

Locale Coverage Status

Current Levels

Count Level Usage Examples
xx Modern Suitable for full UI internationalization
xx Moderate Suitable for “document content” internationalization, eg. in spreadsheet
xx Basic Suitable for locale selection, eg. choice of language on mobile phone

Changes

± New Level Locales
📈 Modern
📈 Moderate
📈 Basic
📉 Basic*

* Note: Each release, the number of items needed for Modern and Moderate increases. So locales without active contributors may drop down in coverage level.

For a full listing, see Coverage Levels

Specification Changes

The following are the most significant changes to the specification (LDML).

There are many more changes that are important to implementations, such as changes to certain identifier syntax and various algorithms. See the Modifications section of the specification for details.

Data Changes

DTD Changes

For a full listing, see Delta DTDs.

Supplemental Data Changes

For a full listing, see ¤¤BCP47 Delta and ¤¤Supplemental Delta

Locale Changes

For a full listing, see Delta Data

Message Format Specification

Emoji Search Keywords

Collation Data Changes

JSON Data Changes

File Changes

Tooling Changes

Keyboard Changes

Migration

Known Issues

  1. [CLDR-17095] The region-based firstDay value (see weekData) is currently used for several different purposes. In the future, some of these functions will be separated out:
    • The day that should be shown as the first day of the week in a calendar view.
    • The first day of the week (day 1) for weekday numbering.
    • The first day of the week for week-of-year calendar calculations.

Acknowledgments

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 http://cldr.unicode.org/index/charts.