No changes have been made to the .htaccess, robots.txt or settings.php files in this release, so upgrading custom versions of those files is not necessary.
The resolves some bugs in 6.x-1.14-beta2, improves the Dublin Core integration and includes a fix for a non-critical security issue. It is recommended to review the release notes for v6.x-1.14-beta1 and beta2 prior to upgrading from 6.x-1.13 as there are several important changes. See also SA-CONTRIB-2012-173 - Nodewords: Information disclosure