Releases: unicode-org/icu
ICU 77.1
We are pleased to announce the release of Unicode® ICU 77. It updates to CLDR 47 (beta blog) locale data with new locales, and various additions and corrections.
ICU 77 is mostly focused on bug fixes, segmentation conformance, and other refinements.
The Java technology preview implementation of the CLDR MessageFormat 2.0 specification has been updated to incorporate the CLDR 46.1 spec plus most but not all of the CLDR 47 changes.
The C++ technology preview implementation of MessageFormat 2.0 is not yet quite up to date with CLDR 46.1.
Please note that for ICU 78 (2025-oct) we are planning to (a) upgrade from Java 8 to Java 11, and (b) remove the ICU4J Locale Service Provider. See the ICU 77 page for details.
ICU 77 RC
We are pleased to announce the release candidate for Unicode® ICU 77. It updates to CLDR 47 (alpha blog) locale data with new locales, and various additions and corrections.
ICU 77 is mostly focused on bug fixes, segmentation conformance, and other refinements.
The Java technology preview implementation of the CLDR MessageFormat 2.0 specification has been updated to incorporate the CLDR 46.1 spec plus most but not all of the CLDR 47 changes.
The C++ technology preview implementation of MessageFormat 2.0 is not yet quite up to date with CLDR 46.1.
For details, please see https://unicode-org.github.io/icu/download/77.html.
Please test this release candidate on your platforms and report bugs and regressions by Monday, 2025-mar-10, via the icu-support mailing list, and/or please find/submit error reports.
Please do not use this release candidate in production.
The preliminary API reference documents are published on unicode-org.github.io/icu-docs/ – follow the “Dev” links there.
icu4x/2024-12-16/76.x
ICU-22920 Fix raw type warnings in icu4j core tests
ICU 76.1
ICU 76 updates to Unicode 16 (blog), including new characters and scripts, emoji, collation & IDNA changes, and corresponding APIs and implementations. It also updates to CLDR 46 (beta blog) locale data with new locales, significant updates to existing locales, and various additions and corrections. For example, the CLDR and Unicode default sort orders are now very nearly the same.
Most of the java.time (Temporal) types can now be formatted directly using the existing ICU4J date/time formatting classes.
There are some new APIs to make ICU easier to use with modern C++ and Java patterns. Most of the C/C++ APIs added for this purpose are implemented as C++ header-only APIs, and usable on top of binary stable C APIs, which is a first for ICU.
The Java and C++ technology preview implementations of the (also in tech preview) CLDR MessageFormat 2.0 specification have been updated to match recent changes.
ICU 76 and CLDR 46 are major releases, including a new version of Unicode and major locale data improvements.
For details, please see https://unicode-org.github.io/icu/download/76.html.
ICU 76 RC
We are pleased to announce the release candidate for Unicode® ICU 76. It updates to Unicode 16 (blog), including new characters and scripts, emoji, collation & IDNA changes, and corresponding APIs and implementations. It also updates to CLDR 46 (beta blog) locale data with new locales, significant updates to existing locales, and various additions and corrections. For example, the CLDR and Unicode default sort orders are now very nearly the same.
Most of the java.time (Temporal) types can now be formatted directly using the existing ICU4J date/time formatting classes.
There are some new APIs to make ICU easier to use with modern C++ and Java patterns. Most of the C/C++ APIs added for this purpose are implemented as C++ header-only APIs, and usable on top of binary stable C APIs, which is a first for ICU.
The Java and C++ technology preview implementations of the (also in tech preview) CLDR MessageFormat 2.0 specification have been updated to match recent changes.
ICU 76 and CLDR 46 are major releases, including a new version of Unicode and major locale data improvements.
For details, please see https://unicode-org.github.io/icu/download/76.html.
Please test this release candidate on your platforms and report bugs and regressions by Monday, 2024-oct-21, via the icu-support mailing list, and/or please find/submit error reports.
Please do not use this release candidate in production.
The preliminary API reference documents are published on unicode-org.github.io/icu-docs/ – follow the “Dev” links there.
icu4x/2024-05-16/75.x
ICU-22718 Export disallowed/ignored UTS 46 data for ICU4X
icu4x/2024-05-03/75.x
ICU-22764 Fix gendict memory safety in toml uchars mode (cherry picked from commit 23bf38f10f146d5b637922321119926b5e60bf03)
ICU 75.1
Unicode® ICU 75 updates to CLDR 45 (beta blog) locale data with new locales and various additions and corrections. C++ code now requires C++17 and is being made more robust.
The CLDR MessageFormat 2.0 specification is now in technology preview, together with a corresponding update of the ICU4J (Java) tech preview and a new ICU4C (C++) tech preview.
For details, please see https://icu.unicode.org/download/75.
ICU 75 RC
We are pleased to announce the release candidate for Unicode® ICU 75. It updates to CLDR 45 (alpha blog) locale data with new locales and various additions and corrections. C++ code now requires C++17 and is being made more robust.
The CLDR MessageFormat 2.0 specification is now in technology preview, together with a corresponding
update of the ICU4J (Java) tech preview and a new ICU4C (C++) tech preview.
For details, please see https://icu.unicode.org/download/75.
Please test this release candidate on your platforms and report bugs and regressions by Monday, 2024-apr-15, via the icu-support mailing list, and/or please find/submit error reports.
Please do not use this release candidate in production.
The preliminary API reference documents are published on unicode-org.github.io/icu-docs/ – follow the “Dev” links there.
ICU 74.2
ICU 74.2 updates to CLDR 44.1 locale data. These are maintenance releases for ICU 74 and CLDR 44, with limited sets of bug fixes and no API or structural changes.
- The CLDR bug fix relevant for ICU is for some formatting patterns that erroneously had two adjacent space characters. These are coalesced into one. (CLDR-17233)
- Important: DateFormat.getInstanceForSkeleton() and the DateTimePatternGenerator sometimes used the wrong patterns because they failed to use/inherit certain data (ICU-22575 — CLDR 44 had removed some redundant data that ICU relied on)
For details, please see https://icu.unicode.org/download/74.