add clarification about details of update to Unicode 11.0.0 [ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66322 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 36c3237011..702aad0459 100644
--- a/NEWS
+++ b/NEWS
@@ -271,6 +271,8 @@ sufficient information, see the ChangeLog file or Redmine
 [Regexp/String]
 
     * Update Unicode version from 10.0.0 to 11.0.0 [Feature #14802]
+      This includes a rewrite of the grapheme cluster (/\X/) algorithm
+      and special-casing for Georgian MTAVRULI on String#downcase.
 
     * Update Emoji version from 5.0 to 11.0.0 [Feature #14802]