YARN-3248. Moving it to improvements section in CHANGES.txt.

(cherry picked from commit df52ff92ae42977bc743630191d1cbe1e17d00cf)

hadoop-yarn-project/CHANGES.txt

@@ -27,6 +27,9 @@ Release 2.6.1 - 2015-09-16
     YARN-3978. Configurably turn off the saving of container info in Generic AHS
     (Eric Payne via jeagles)
 
+    YARN-3248. Display count of nodes blacklisted by apps in the web UI.
+    (Varun Vasudev via xgong)
+
   OPTIMIZATIONS
 
   BUG FIXES
@@ -211,9 +214,6 @@ Release 2.6.1 - 2015-09-16
     YARN-3740. Fixed the typo in the configuration name:
     APPLICATION_HISTORY_PREFIX_MAX_APPS. (Xuan Gong via zjshen)
 
-    YARN-3248. Display count of nodes blacklisted by apps in the web UI.
-    (Varun Vasudev via xgong)
-
     YARN-3544. Got back AM logs link on the RM web UI for a completed app.
     (Xuan Gong via zjshen)