The team at Roundcube is still hard at work and they have released a new version of their awesome webmail client. It contains another round of bug fixing and they added some security improvements which will protect the Roundcube users from XSS and clickjacking attacks.
With this release Roundcube also passes the email standards project’s acid test. See http://www.email-standards.org/acid-test
I would advise you that if you use Roundcube please upgrade to this version. Here is a document on how to upgrade.