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:
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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