Unicode® Recent Releases

This page lists the most recent releases of the various technical standards, data repositories, and internationalization libraries developed and maintained by the Unicode Consortium.

Last updated: September 9, 2025

Unicode Standard

Each release of the Unicode Standard includes the core specification, the code charts, data files, all annexes, and UTS #10, UTS #39, UTS #46, and UTS #51.

Documentation	Components	Date	Announcements
			Release	Other
Unicode 17.0.0	Components	2025-09-09	17.0.0 Blog Post

For information about earlier releases of the Unicode Standard, see the Archive of Unicode Versions.

UTS #51, "Unicode Emoji"

Specification	Version	Date
UTS #51 (rev 29)	17.0	2024-09-04

UTS #51 is normally synchronized with the same version of the Unicode Standard, but on occasion a separate minor version of UTS #51 may be published between versions of the Unicode Standard.

Common Locale Data Repository (CLDR)

Each release of CLDR includes complete XML data, tools and a set of keyboard definitions. It also includes an associated version of UTS #35, "Unicode Locale Data Markup Language (LDML)", plus a collection of online charts that present some of the XML data in a more readable format.

Release Note	Data	LDML spec	Date	Announcement
v47	CLDR 47	UTS #35	2025-03-13	CLDR 47 Blog Post

For information about earlier releases of CLDR, see CLDR Releases/Downloads.

International Components for Unicode (ICU)

Each release of ICU consists of the complete C/C++ source code for the ICU4C library and the complete Java source code for the ICU4J library, plus data files used by the library.

Release Note	ICU4C ReadMe	ICU4J ReadMe	Date	Announcement
ICU 77	ICU4C	ICU4J	2025-03-13	ICU 77 Blog Post

For information about earlier releases of ICU, see Downloading ICU.

ICU4X

Each release of ICU4X appears on a release page in the ICU4X public GitHub repository. The source code is provided both as a zip file and as a tar.gz file.

Tagged Release	Release Notes	Date	Announcement
ICU4X 1.5	changelog	2024-05-28	--

For information about earlier releases of ICU4X, see the release history.

UTS #18, "Unicode Regular Expressions"

Specification	Version	Date
UTS #18 (rev 23)	23	2022-02-08

For information about earlier releases of UTS #18, follow the "previous version" back links in the header section of each revision of the specification.

UTS #37, "Unicode Ideographic Variation Database"

Specification	Version	Date
UTS #37 (rev 14)	6.0	2022-01-28

For information about earlier releases of UTS #37, follow the "previous version" back links in the header section of each revision of the specification. For information about the current state of registrations pursuant to the rules of UTS #37, see the Ideographic Variation Database maintained by the registrar.

UTS #55, "Unicode Source Code Handling"

Specification	Version	Date
UTS #55 (rev 5)	2	2024-01-29

For information about earlier releases of UTS #55, follow the "previous version" back links in the header section of each revision of the specification.