Update idlelib/NEWS.txt.
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 68d4e93..ede636a 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -1,7 +1,26 @@
+What's New in IDLE 2.7.10?
+=========================
+
+*Release data: 2015-05-23*
+
+- Issue #23583: Fixed writing unicode to standard output stream in IDLE.
+
+- Issue #20577: Configuration of the max line length for the FormatParagraph
+  extension has been moved from the General tab of the Idle preferences dialog
+  to the FormatParagraph tab of the Config Extensions dialog.
+  Patch by Tal Einat.
+
+- Issue #16893: Update Idle doc chapter to match current Idle and add new
+  information.
+
+- Issue #23180: Rename IDLE "Windows" menu item to "Window".
+  Patch by Al Sweigart.
+
+
 What's New in IDLE 2.7.9?
 =========================
 
-*Release data: 2014-12-07* (projected)
+*Release data: 2014-12-10*
 
 - Issue #16893: Update Idle doc chapter to match current Idle and add new
   information.