Perldelta for integer stringification change in Perl_do_print

Author: richardleach

pod/perldelta.pod

@@ -118,6 +118,12 @@ patterns and swaps in a new dedicated operator (C<OP_SUBSTR_LEFT>).
 
 =item *
 
+The stringification of integers by L<perlfunc/print> and L<perlfunc/say>,
+when coming from an SVt_IV, is now more efficient.
+[GH #XXXXX]
+
+=item *
+
 XXX
 
 =back