Unicode CLDR 25 has been released, providing an update to the key building blocks for software supporting the world's languages. This data is used by a wide spectrum of companies for their software internationalization and localization, adapting software to the conventions of different languages for such common software tasks.

Unicode CLDR 25 focused primarily on improvements to the LDML structure and tools, and on consistency of data. There are many smaller data fixes, but there was no general data submission. Changes include the following:

New rules for plural ranges (1-2 liters) for 72 locales, plurals for 2 locales, and ordinals for 18 locales.Better locale matching with fallbacks for languages, default languages for continents and subcontinents, and default scripts for more languages.Two new locales: West Frisian (fy) and Uyghur (ug).Two new metazones: Mexico_Pacific and Mexico_NorthwestUpdated zh pinyin & zhuyin collations and translators for Unicode 6.3 kMandarin dataUpdated keyboard layout data for OSX, Windows and others.This version contains data for238languages and259territories—740locales in all.

Details are provided in http://cldr.unicode.org/index/downloads/cldr-25, along with a detailed Migration section.