I don't know of a version file for RoundCube, showing the version can be a security risk.
I just ask if there is a way to know the the number of the last release (By contacting roundcube.net)
The script was password protected, and i never show my version.
Just if there is a update available, and the link.
Not for everyone, just for the administrator.
(I don't want to show MY version to the world !!! )
Thanks ;-)