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We are pleased to announce the release of Unicode® ICU 64.2. It updates to draft Unicode 12.1 data and to CLDR 35.1, adding support for the new Japanese era "Reiwa" (令和) and a special format for the first year of an era in the Japanese locale ("元年" instead of "1年").
This is on top of the recent ICU 64 release which updated to Unicode 12 and to CLDR 35 locale data with many additions and corrections, and some new languages. ICU adds a data filtering/subsetting mechanism, improved formatting API, and a C++ LocaleBuilder.
For details please see http://site.icu-project.org/download/64.
The API reference documents are published at the following locations: