CWP has automatic updates which are done via crontab.
If the new version is released then please allow up to 48 hours for your server to update.
You can check for the latest released version on our ChangeLog website
http://centos-webpanel.com/changelog
If you want to force update you can do that by executing the following command.
sh /usr/local/cwpsrv/htdocs/resources/scripts/update_cwp
or
sh /scripts/update_cwp
If you have issues with the CWP update then you should contact support.