As you may have noticed, the Roundcube team released a new version of their software yesterday (version 1.3.1). All our skins and plugins are fullly compatible with this new release.
Version 1.3.1 is a long-term release which fixes a number of bugs, a potential XSS vulnerability and optimizes the program to run on the latest version of PHP. It's highly recommended that you upgrade all productive installations to this latest version.
The complete list of fixes is available here: https://github.com/roundcube/roundcubemail/releases/tag/1.3.1