+version ?.? - ?, 201?-??-??
+
+* New features
+
+** --owner and --group names and numbers
+
+The --owner and --group options now accept operands of the form
+NAME:NUM, so that you can specify both symbolic name and numeric ID
+for owner and group. In these options, NAME no longer needs to be
+present in the current host's user and group databases.
+