Apple has released macOS Catalina 10.15.3, which includes bug fixes and security updates to the Mac Catalina operating system.
Separately, Mac users running Mojave or High Sierra will find new Security Updates available for those respective operating systems.
Often our clients call to ask about changes to their Macs after updating their operating systems, or they call to ask if an update is really necessary. Call our office if you are unsure - we can update your Mac for you, explain functionality and help in organization and set up of your Mac ...we are here to help!