Softaculous updates all the applications on a regular basis. When you log in to the Softaculous auto-installer, you will see the home page. If there are any updates available for the applications that you have installed, you will see a notification on the top of the page. When you click on that notification, you will be directed to a new page that will list all your outdated Softaculous applications.
It is important to take into consideration that Softaculous does not offer beta versions of any applications/scripts.