Ruby 4.0.0 preview2 uses Unicode version 17.0

Ref ruby/ruby#15170

Author: yahonda

en/news/_posts/2025-11-17-ruby-4-0-0-preview2-released.md

@@ -8,7 +8,7 @@ lang: en
 ---
 
 {% assign release = site.data.releases | where: "version", "4.0.0-preview2" | first %}
-We are pleased to announce the release of Ruby {{ release.version }}. Ruby 4.0 updates its Unicode version to 15.1.0, and so on.
+We are pleased to announce the release of Ruby {{ release.version }}. Ruby 4.0 updates its Unicode version to 17,0.0, and so on.
 
 ## Language changes
 
@@ -32,7 +32,7 @@ Note: We're only listing notable updates of Core class.
 
 * String
 
-    * Update Unicode to Version 15.1.0 and Emoji Version 15.1. [[Feature #19908]]
+    * Update Unicode to Version 17.0.0 and Emoji Version 17.0. [[Feature #19908]][[Feature #20724]][[Feature #21275]]
         (also applies to Regexp)
 
 

ja/news/_posts/2025-11-17-ruby-4-0-0-preview2-released.md

@@ -8,7 +8,7 @@ lang: ja
 ---
 
 {% assign release = site.data.releases | where: "version", "4.0.0-preview2" | first %}
-Ruby {{ release.version }} が公開されました。Ruby 4.0では、Unicodeバージョンの15.1.0へのアップデートなど様々な改善が行われています。
+Ruby {{ release.version }} が公開されました。Ruby 4.0では、Unicodeバージョンの17.0.0へのアップデートなど様々な改善が行われています。
 
 
 
@@ -36,7 +36,7 @@ Ruby {{ release.version }} が公開されました。Ruby 4.0では、Unicode
 
 * String
 
-    * Update Unicode to Version 15.1.0 and Emoji Version 15.1. [[Feature #19908]]
+    * Update Unicode to Version 17.0.0 and Emoji Version 17.0. [[Feature #19908]][[Feature #20724]][[Feature #21275]]
         (also applies to Regexp)