Unicode 18.0 Beta Review Opens for Feedback

 By: Peter Constable, Chair of the Unicode Technical Committee

The Unicode® Standard provides the character encoding that underlies text in the world’s language on billions of devices, in apps and across the web. The next version of the standard, version 18.0, will be released later this year. A beta review period for Unicode 18.0 has started and is open until July 7, 2026.

The beta is intended primarily for review of character property data and changes to algorithm specifications (Unicode Standard Annexes and certain Unicode Technical Standards that are synchronized with the Unicode Standard). Implementers are encouraged to review these changes for consistency or unexpected issues. Also, a complete draft of the core specification text is available for review during the beta period.

At this phase of a release, the character repertoire is considered stable. No new characters will be added. Characters that are new in this version could still be removed, and their character names or code points could be changed, but such changes would require strong justification.

For this release, 13,047 new characters will be added, bringing the total number of encoded characters in Unicode 18.0 to 172,848. The largest set of additional characters is for the new Small Seal script with 11,328 ideographs. Other notable character additions include:

• Chisoi script: a modern script used in northeast India.
• Jurchen script: an historic ideographic script used in northeastern China during the Jin and Ming dynasties.
• New currency symbols for the Maldivian rufiyaa, Omani rial and UAE dirham currencies.
• 72 historical mathematical symbols.
• 73 musical symbols.
• Nine new emoji characters.

See The Pipeline and the delta code charts pages for details on all of the new characters.

In addition to new characters, there are some significant changes related to character properties or algorithms, including the following:

• A new Unicode Standard Annex will be added to document properties for large, non-CJK East Asian scripts.
• Two provisional properties for CJK Unified ideographs will be removed, and two new provisional properties will be added.
• The derivation of one of the properties used for grapheme cluster segmentation of Indic scripts will be revised.
• There will be significant revisions to the confusable characters data (confusables.txt) relevant for security.

It was found that wording in the core specification of earlier versions was not completely clear regarding variation sequences and conformance. To provide greater clarity, the text describing variation sequences and related conformance requirements will be revised. See section 3.6.2 in the draft core spec for details.

See the Unicode 18.0 Beta landing page for other noteworthy property and algorithm changes. For full details regarding the Beta review, see Public Review Issue #548. Feedback should be reported under PRI #548 using the Unicode Contact Form by July 7, 2026.

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Unicode CLDR 49: Submission open through June 2026

The Unicode® CLDR Survey Tool is open for submission for version 49 through June (see detailed schedule below). CLDR provides key building blocks for software to support the world's languages (dates, times, numbers, sort order, etc.). All major browsers and all modern mobile phones use CLDR for language support. (See Who uses CLDR?)

Via the online Survey Tool, contributors supply data for their languages — data that is widely used to support much of the world’s software. This data is also a factor in determining which languages are supported on mobile phones and computer operating systems.

The new areas in CLDR 49 are focused on:

• Unicode 18 additions: new emoji, script names, …

• Improvements in date and time and locale display names formatting

• New languages available for submission in Survey Tool: Adyghe [ady], Brahui [brh], Hunsrik [hrx],  Interslavic [isv], Kabardian [kbd], Kaitag [xdq], Mara [mrh], and Susu [sus] 

General Submission for TC locales* opened recently and is slated to finish on June 10, 2026. The Survey Tool then enters a vetting phase, where contributors select the best data for each field. That vetting phase is slated to finish on June 29. The draft data will be available in a public alpha in early August, and the final release is targeted for mid-October.

Other locales, managed by the DDL Working Group, have a longer submission period to allow smaller organizations to submit data on a more flexible timeline. The Survey Tool opened earlier for these locales, and will stay in Extended Submission until the end of June, so that these organizations can contribute data for the current release.

Each new locale starts with a small set of Core data, such as a list of characters used in the language. Submitters of those locales need to bring the coverage up to Basic level (very basic basic dates, times, numbers, and endonyms) during the following submission cycle. Once a language reaches Basic coverage, it has the minimum support for use in language selection, such as on mobile devices. In the next submission cycle, the name of that language is also added for translation for all languages at Modern coverage. Locales that reach a higher level of coverage (Moderate or Modern) are suitable for general-purpose support in applications and operating systems.

If you would like to contribute missing data for your language, see Survey Tool Accounts. For more information on contributing to CLDR, see the CLDR Information Hub.

* TC Locales are ones for which major organizations commit to adding data in concert over a short span of time each year.

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Unicode Technology Workshop 2026: Call for Sessions Now Open!

For those interested in participating in and contributing to Unicode Technology Workshop 2026: Unicode in the World, the call for submissions of session and tutorial proposals is now open. If you work on Unicode internationalization technologies or use Unicode internationalization technologies in your work, we want to hear from you. You can register your interest in contributing using the following link: Call for Submissions

ICU4X 2.2 released!

 The ICU4X Technical Committee is happy to announce ICU4X 2.2, an update to our modular, portable, and secure i18n library.

ICU4X is Unicode's modern, lightweight, portable, and secure i18n library. Built from the ground up, its binary size and memory usage footprint is 50-90% smaller than ICU4C. It is memory-safe, written in Rust with interfaces into C++, JavaScript, Dart, TypeScript, Kotlin — with other languages in the timeline. Mozilla Firefox, Google Chrome, Google Pixel Watch, core Android, numerous Flutter apps, and more clients are already using ICU4X.

Important changes in ICU4X 2.2 include:

1. Latest i18n data: This release includes an update to CLDR 48.2 and support for TZDB 2026a.

2. New and improved icu_calendar: This release contains new APIs in icu_calendar, as well as some behavior changes in icu_calendar; see the migration notes on GitHub.

a. Datetime arithmetic: It is now possible to add and subtract dates. 

b. More flexible date construction: Build dates from all kinds of constituent data: extended years, era years, ordinal months, month codes, etc., with support for different kinds of overflow handling.

c. Typed months: The new Month type replaces month codes in a type safe way.

d. Experimental third-party crate integration: We now support converting and formatting types from the jiff, chrono, and time crates. See icu_datetime::input::third_party. We’re not yet sure if these integrations should live in ICU4X, in the third party crates, or some adapter crate. We welcome your feedback!

e. Changes to Japanese and Hijri calendars: We no longer support pre-Meiji eras because CLDR removed them, and we now always use Umm al-Qura data for simulated Hijri. See the migration notes on GitHub for more details.

3. Experimental Kotlin Bindings: We now have Kotlin bindings for ICU4X (found under ffi/mvn), with the same set of supported APIs as our other cross-language bindings.

4. Experimental features:

a. Display names: Adds new internal data layout exposed via RegionDisplayName and ScriptDisplayName APIs. The old data layout, optimized for loading multiple names at once, is moved into the multi module. Please share feedback on our tracking issue.

b. Compact decimal formatter: Please share feedback in preparation for stabilization in a future release.

c. ML segmentation: Initial code for RAdaBoost word segmenter for Chinese and CNN word segmenter for Thai.

5. Better hour cycles: Adds support for Clock12 and Clock24 in datetime formatting.

See the GitHub release for more details.

Check out our quickstart tutorial, interactive demo, or C++, TypeScript, and Dart documentation.

As before, the Rust crate is available at crates.io, with documentation at docs.rs. 

Please post any questions via GitHub Discussions.

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Unicode ICU 78.3 and CLDR 48.2 released

Unicode® CLDR is the most widely used provider of locale data. It provides the essential building blocks that allow software to display dates, times, and currencies correctly in every language and region. Unicode® ICU provides widely used C/C++/Java internationalization (i18n) libraries and APIs.

We have just published new maintenance releases of ICU and CLDR, with some small but significant changes. To find out more and to download these releases, go to: 

• ICU 78.3 Release Note

• CLDR 48.2 Release Note

CLDR and ICU have each published a maintenance release in March instead of a major release. The next major releases, CLDR 49 and ICU 79, are planned for October and will include the data from the next CLDR general submission period, planned to start in early Q2 2026, as well as Unicode 18.

The following issues are fixed in the CLDR 48.2 and ICU 78.3 maintenance releases:

• Several important locale data bug fixes including:

• Group separator for number formatting was updated to ' in fr_CH for consistency with other Swiss locales.

• Some fixes to date and time formats including: Hv available formats were updated to match behavior in CLDR 47. The previous change caused web compatibility issues related to current JS capabilities.

• Fixes for Emoji annotations issues, such as collisions between emoji short names.

• Updated abbreviated and narrow AM/PM for ko and ps for consistency with how the wide forms are localized.

• Full list of changes are available in Δ48.2

• ICU 78.3 includes the CLDR 48.2 changes

• ICU also fixes a C++ code point iterator bug

• Updates for timezone data 2026a

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UTS #18: More Unicode Properties in Regular Expressions

Regular Expressions, or “Regex”, are the invisible workhorses of the digital world. Regex allows apps and computer systems to find, validate, and change text based on patterns rather than specific words. Unicode properties play a vital role in this. Rather than an application using a fixed list of characters like a-z, A-Z — and failing badly for all but English — Unicode properties take on the burden of supplying meaningful sets of characters, like letters, Greek characters, or Emoji. Properties can be combined, such as Greek letters with an expression like [\p{script=greek}&\p{letter}].

This specification has an update for now covering over 100 different properties. The following are the most important changes, with others found in the modification section.

• Section 2.7 Full Properties lists the full set of properties recommended for support. This version adds: IDS_Unary_Operator, NFKC_Simple_Casefold, ID_Compat_Math_Start, ID_Compat_Math_Continue, Indic_Conjunct_Break, and RGI_Emoji_Qualification

• Special rules called “matching rules” are used when looking up properties and their values by name. This version recommends the matching rules from Section 5.9 Matching Rules of UAX #44.

By expanding and refining property support in UTS #18, this update strengthens the foundation for global text processing.

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From Central Bank to Code Point: A Roadmap for Currency Symbol Implementation

In the past year, several new currency symbols have been proposed for encoding in the Unicode Standard:

• February 2025: The Saudi Central Bank announced the creation of a new symbol for the Saudi riyal.

• March 2025: The Central Bank of the U.A.E. announced creation of a new symbol for the UAE Dirham (cf. Dirham Currency Symbol Guideline).

• May 2025: A proposal was submitted to encode the symbol for the Maldivian Rufiyaa. (The symbol was created by the Maldives Monetary Authority in 2022.)

• November 2025: The Central Bank of Oman announced the creation of a new symbol for the Omani Rial.

The Saudi riyal sign was proposed for encoding just barely in time for it to be included in version 17.0 of the Unicode Standard, released in September 2025. Proposals for the other currency symbols were submitted too late for version 17.0, so the symbols will be encoded in version 18.0, which will be released in September 2026.

Recent currency symbol trend

Distinct currency symbols are not essential for local or international financial transactions, and most currencies are denoted with their written name or an abbreviation; e.g. “kr” for krone. However, in recent years, since the creation of the euro currency and its distinct symbol, several monetary authorities have created distinct symbols to denote their currency. A currency symbol could potentially be created only for private use of the monetary authoring — printing on bills or embossing on coins. Usually, however, currency symbols are intended for public use: to appear on shop signs, online retail sites, or anywhere that currency amounts are presented.

Such public usage leads to a need for the symbol to be encoded in the Unicode Standard and supported in commercial software and services. Standardization of a new character and subsequent support by vendors takes time: typically, at least one year, and often longer. All too often, however, monetary authorities announce creation of a new currency symbol anticipating immediate public adoption, then later discover there will be an unavoidable delay before the new symbol is widely supported in products and services.

For a contrast with another recent currency development, Bulgaria transitioned from their local lev currency to the euro in January 2026, but the transition was formally decided and announced in July 2025, several months before the change went into effect. This allowed several months for vendors to prepare for the change.

Implementing support for the new currency symbols

Vendor support for a new currency symbol can involve many different things, such as the following:

• Updates to fonts

• Updates to software keyboard layouts or new designs for physical keyboards

• Updating locale data and programming interfaces for formatting currency values

• Updating software used for generation of financial statements and reports

• Updates to applications, online services or devices for commercial transactions

However, all of these require development time, and development can only begin after the new symbol is encoded in the Unicode Standard. People wishing to start using a new currency symbol in applications and services should anticipate that, from the time the symbol is proposed for encoding, it could take many months or even years before vendors have distributed product updates.

Because there is unavoidable delay from when a new currency symbol is proposed to when it can be supported by vendors, monetary authorities are strongly encouraged to engage with the Unicode Consortium at least one year in advance of when a new currency symbol is expected to go into public usage.

Note regarding support on devices

For many devices, including some mobile phones, many vendors do not routinely provide updates, or discontinue providing updates on older devices. For this reason, users should not be surprised if a new currency symbol is not supported natively on a device years after the symbol was introduced. Applications or online services accessed on those devices can have a different update policy however, so experience using such devices could reflect partial support.

Recommendations for implementation of Unicode 18.0 currency symbols

The following three new currency symbols have been approved for encoding in Unicode version 18.0, which will be published in September 2026:

• U+20C2 RUFIYAA SIGN

• U+20C3 UAE DIRHAM SIGN

• U+20C4 OMANI RIAL SIGN

Complete details for these characters are included in the Unicode 18.0 Alpha preview release. The technical details — character names, code points, property data — are unlikely to change before Unicode 18.0 is released, but these details are not completely stable until the Unicode Technical Committee has made the final technical decisions for Unicode 18.0. For this reason, vendors can choose to start working on implementations once the Alpha preview is available, but vendors should not distribute product updates until after Unicode version 18.0 is released in September 2026.

Extending support with CLDR

Many implementations use Unicode CLDR data for currency formatting, so incorporating the new symbols is an important step for widespread support. A CLDR release will follow not long after release of Unicode version 18.0, and will contain the new currency symbols for applicable currencies and locales. 

However, the symbols will initially be listed as “alternative” symbols for the respective currencies. The reason for a symbol being an alternative, rather than the default, is to avoid the symbol being displayed in contexts in which available fonts might not yet support the new symbol, causing users to see a missing glyph for their currency; e.g.,

instead of

Later, when there is confidence that the symbols are more widely supported in platforms and fonts, a future CLDR version can update details to list the new currency symbol as the default, rather than as an alternative.

Working together to support local monetary authorities

When monetary authorities introduce a new symbol for their currency, it marks a significant milestone for financial and commercial activity in their domain. The Unicode Consortium is honored to work with monetary authorities, and would like to help make the launch of a new symbol as smooth as possible. With that in mind, we invite monetary authorities planning creation of a new currency symbol to engage with us well in advance of a planned launch.

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