CHANGELOG.md in activesupport-4.2.9 vs CHANGELOG.md in activesupport-4.2.10.rc1

@@ -1,4 +1,9 @@
+## Rails 4.2.10.rc1 (September 20, 2017) ##
+
+*   No changes.
+
+
 ## Rails 4.2.9 (June 26, 2017) ##
 
 *   Fixed bug in `DateAndTime::Compatibility#to_time` that caused it to
     raise `RuntimeError: can't modify frozen Time` when called on any frozen `Time`.
     Properly pass through the frozen `Time` or `ActiveSupport::TimeWithZone` object