The Metasploit team releases weekly updates that include bug fixes, new modules, and feature enhancements. If you have administrator privileges, you should regularly check for software updates and apply the updates to the system. This ensures that you have the latest code from the Metasploit Framework and access to the newest modules and features.
For example, if you recently installed Metasploit 4.4, you have the code base that was originally released. You do not have the modules or fixes that have been provided in subsequent updates. Therefore, you need to check to see if there is an update available and apply the update to the system.