We are pleased to announce the release of the 4.0.0 version of Unicode Technical Standard #10: The Unicode Collation Algorithm (UCA), which specifies a default sorting order and comparison mechanism for all Unicode characters.
Major changes in this release include: - The version of the UCA is now being synchronized with versions of the Unicode Standard, so that the repertoire of characters will be the same. - An extensive new introduction has been added. It discusses important concepts that were formerly in Section 5.17 of Unicode 3.0, but has been completely reworked for clarity and coverage. - The Scope section has been recast and is now at the end of the introduction. - The location of data files has been changed to http://www.unicode.org/Public/UCA/
