C<$DatabaseRequireSSL> has been removed, and setting it will trigger an
informational message that setting it is ineffective.
-The full-text indexing defaults for PostgreSQL have changed; GiST is now
+The full-text indexing defaults for PostgreSQL have changed; GIN is now
the suggested index, as well as storing data in a separate
AttachmentsIndex table. Both changes improve lookup speed. For
improved search performance, you may wish to drop existing C<tsvector>
-and C<GIN> indexes on C<Attachments>, and re-generate the index using
+and C<GiST> indexes on C<Attachments>, and re-generate the index using
C<rt-setup-fulltext-index>.
+=head1 UPGRADING FROM 4.2.12 AND EARLIER
+
+New deployments install an C<RT_SiteConfig.pm> that includes a C<use utf8;>
+to allow Unicode to be used in config. You may wish to add a C<use utf8;> to
+the top of your C<RT_SiteConfig.pm> if you haven't already done so.
+
=cut