CLDR Version 27 Released

<http://cldr.unicode.org/index/downloads/cldr-27#TOC-Coverage> Unicode
CLDR 27 has been released, providing an update to the key building
blocks for software supporting the world's languages. This data is used
by all major software systems
<http://cldr.unicode.org/index#TOC-Who-uses-CLDR-> for their software
internationalization and localization, adapting software to the
conventions of different languages for such common software tasks.

There was no Survey Tool data collection phase for CLDR 27. Instead, the
release focused primarily on stability---cleaning up data inheritance
and making specific fixes---as well as improvements to the JSON format
of the data. Changes include the following:

    * *Cleanup of region locales:* A major cleanup effort was undertaken
      to resolve gratuitous differences between region-specific locales
      and the parent from which they inherit. In regional locales, it
      was determined where the parent value was an acceptable
      replacement for a child-specific value which could then be
      removed, providing greater consistency in behavior in the various
      region locales. A special effort was made to clean up country
      names in certain locales.
    * *Changes to English inheritance:* As an outcome of the cleanup
      effort above, the inheritance model for English locales is now
      simplified, making all en_XX locales inherit from either "en"
      directly (for current or former U.S. territories), or from
      British-influenced "en_001 - World English". This is also
      reflected in some changes for measurement systems.
    * *Emoji:* Data for emoji annotations and an emoji collation were
      added, to accompany Unicode Technical Report #51, Unicode Emoji
      <http://www.unicode.org/reports/tr51/>.
    * *Collation:* There are new sort orders for emoji (as noted above),
      and an Austrian phonebook sort order. Scripts can be reordered
      individually, rather than only in specific groups. Fractional
      tertiary weights are now used that are lower than /common/, to
      allow shorter sort-keys with normal Hiragana letters.
    * *Specification: *The LDML specification has descriptions of new or
      modified structure, plus a number of fixes and clarifications. See
      Modifications
      <http://www.unicode.org/reports/tr35/tr35-39/tr35.html#Modifications> for
      a list of changes.
          o Improved documentation of locale inheritance and matching,
            bundle versus item lookup, and parent locale information.
          o Extensive clarifications to the intended use of the language
            matching data.
          o Explicit new definitions of Unicode identifiers, such as
            Unicode Calendar Identifier
            <http://www.unicode.org/reports/tr35/tr35-39/tr35.html#UnicodeCalendarIdentifier>,
            for use in citations.
    * *Charts:* The navigation within charts has been improved, and new
      ones added:
          o Delta charts,
            <http://unicode.org/repos/cldr-aux/charts/27/delta/index.html>
            showing detailed changes from v26 to v27.
          o Day periods
            <http://unicode.org/repos/cldr-aux/charts/27/supplemental/day_periods.html>,
            showing the new day period selectors.
          o Emoji Annotations
            <http://unicode.org/repos/cldr-aux/charts/27/annotations/index.html>,
            showing provisional annotations in English and 21 other locales.
          o Territory Information
            <http://unicode.org/repos/cldr-aux/charts/27/supplemental/territory_information.html>,
            split out of Language Territory Information
            <http://unicode.org/repos/cldr-aux/charts/27/supplemental/language_territory_information.html>
            for easier viewing.
    * *JSON on github:* The JSON form of the data is now available on
      github, rather than being found through the *Data* link.

Details are provided in http://cldr.unicode.org/index/downloads/cldr-27,
along with a detailed Migration section.

http://blog.unicode.org/2015/03/cldr-version-27-released.html

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