For the best experience with 10.15 Catalina, be sure to keep your Office apps up-to-date. If the version of Office installed on your Mac is earlier than 16.16, and you are not being offered updates, you can download the latest Office for Mac suite installer. See What version of Office am I using? All I did was upgrade to Mac OS 10.15. The MS download page has Office 2011 available as a download. My license key worked, the download and installation worked, but now it's forcing me to trial/buy Office 365 for $70 per year. Under the Overview section, click on the 'Software Update' button. This will launch a dedicated section, listing the profile of the latest macOS version that is available. If the profile of macOS Catalina 10.15 is listed, then click on the 'Upgrade Now' button adjacent to it.
Apple has released the macOS Catalina 10.15.7 Supplemental Update, which includes several security fixes for your Mac. You can get the details of the update in Apple’s macOS Catalina 10.15.7 Supplemental Update support document.
Before installing the update, it’s a good idea to back up your Mac’s data in case the update causes an issue with your software and you need to restore. Here’s how to install the update.
Click on the Apple menu and select About This Mac.
Click on the Software Update button that appears in the Overview tab.
The Software Update system preference should open. Click the Update Now button when you are ready.
Your Mac will need to restart.
In conjunction with the announcement of new Apple News features, Apple on Wednesday released macOS 10.15.6 Catalina, an update to the Mac operating system.
The News app now has support for a new curated local news section in the Today feed. Currently, only five regions are covered: the Bay Area, Houston, Los Angeles, New York, and San Francisco. If you subscribe to Apple News+, you’ll find that Apple has added more local newspapers. The Apple News daily newsletter is also “personalized with stories that reflect your interests.”
Update Mac Os 10.15.6
Upgrade Macos 10.15
As for bug fixes, Apple says 10.15.6 has the following:
Upgrade Mac Os 10.15
Adds a new option to optimize video streaming on HDR-compatible Mac notebooks for improved battery life
Fixes an issue where the computer name may change after installing a software update
Resolves an issue where certain USB mouse and trackpads may lose connection
The update also includes several enterprise-level update, which are detailed in this support document.