On irc, we agreed that this is important enough to be highighted there.
=head1 Notice
-This release includes two updates with widespread effects:
+This release includes three updates with widespread effects:
=over 4
C<do> now gives a mandatory warning when it fails to load a file which it
would have loaded had C<.> been in C<@INC>.
+=item * In regular expression patterns, a literal left brace C<"{">
+should be escaped
+
+See L</Unescaped literal C<"{"> characters in regular expression patterns are no longer permissible>.
+
=back
=head1 Core Enhancements