prepare for release

docs/RELEASE_NOTES

@@ -5,7 +5,7 @@ $notes['security'] = false;
 /* Mailing list release notes. */
 $notes['changes'] = <<<ML
 The Horde Team is pleased to announce the final release of the Internet Mail
-Program (IMP) version H5 (6.2.26).
+Program (IMP) version H5 (6.2.27).
 
 IMP, the Internet Mail Program, is one of the most popular and widely deployed
 open source webmail applications in the world. It allows universal, web-based
@@ -20,8 +20,9 @@ http://www.horde.org/apps/imp/docs/UPGRADING
 For detailed installation and configuration instructions, please see
 http://www.horde.org/apps/imp/docs/INSTALL
 
-The major changes compared to IMP version H5 (6.2.25) are:
-    * Fix syntax error causing fatal error.
+The major changes compared to IMP version H5 (6.2.26) are:
+    * Fix missing attachments when forwarding a message with PHP 7.4.
+    * Prevent the creation of an empty To: header.
 ML;
 
 $notes['name'] = 'IMP';